FLIR SeaFLIR II Series User manual

Brand: FLIR

Model: SeaFLIR II Series

Type: User manual

This manual is also suitable for

Imaging System

Operator’s Manual

25 Esquire Road, North Billerica, MA 01862 - USA

Phone: (978) 901-8000 Fax: (978) 901-8885

P/N 18704-000 Rev. D – October 2006

subject to change without notice. This publication or any part thereof

may not be reproduced in any form without the expressed written

permission of FLIR Systems, Inc.

This document is controlled to FLIR Technology Control Level 2.

U.S. government authorization is required prior to export. Diversion

contrary to U.S. Law prohibited. Contact FLIR Systems, Inc. Export

Compliance Department for further information.

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

SeaFLIR II

Imaging System

Operator’s Manual

P/N 18704-000 Rev. D

FLIR Systems, Inc.

16 Esquire Road

North Billerica, Ma 01862 USA

Phone: (978) 901-8000

Fax: (978) 901-8885

This publication, or any parts thereof,

may not be reproduced in any form

without the express written

permission of

FLIR Systems Inc.

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

WARNINGS, CAUTIONS, NOTES

WARNING

Used to indicate a location, equipment or system where a

potential hazard exists capable of producing injury to

personnel if approved procedure is not followed.

CAUTION

Used to indicate an operating or maintenance procedure,

practice, condition, statement, etc., which, if not strictly

observed, could result in damage to or destruction of

equipment or loss of mission effectiveness or long term

health hazards to personnel.

NOTE:

Used to indicate an essential operating or maintenance

procedure, condition, or statement.

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

vii

Table of Contents

Paragraph Title Page

INTRODUCTION .........................................................................1

1.1 Purpose and Scope of this Technical Manual...........................1

1.2 General......................................................................................1

1.3 System Capabilities...................................................................2

1.3.1 Key Features ..........................................................................2

1.3.2 Processing Capabilities ..........................................................3

1.3.3 Video Recording Capability ....................................................3

1.4 SeaFLIR II Imaging System ......................................................3

1.4.1 Stabilized Gimbal Assembly (SGA)........................................3

1.4.1.1 Gyro Stabilization.................................................................5

1.4.1.2 Directional Control................................................................6

1.4.1.3 Forward Looking Infrared Camera .......................................6

1.4.1.4 Optional 1.8X Extender........................................................7

1.4.1.5 IR FPA Cooling System .......................................................7

1.4.1.6 CCD Camera........................................................................7

1.4.1.7 Laser Pointer (Optional).......................................................8

1.4.2 Control Electronics Unit (CEU)...............................................11

1.4.3 Hand Control Unit (HCU)........................................................11

1.5 System Power Information........................................................12

2. SYSTEM INSTALLATION ...........................................................13

2.1 System Diagram........................................................................13

3. OPERATING INSTRUCTIONS....................................................15

3.1 Description and Use of Controls and Indicators .......................15

3.1.1 MENU Switch .........................................................................15

3.1.2 ADJ Switch .............................................................................15

3.1.3 EXIT Switch ............................................................................15

3.1.4 Tracker On/Off (O/I) Switch ....................................................17

3.1.5 Tracker Mode Switch..............................................................17

3.1.6 Symbology (SYM) Switch.......................................................18

3.1.6.1 Symbology:FULL..................................................................19

3.1.6.2 Symbology:2 ........................................................................19

3.1.6.3 Symbology:3 ........................................................................19

3.1.6.4 Symbology:MIN....................................................................19

3.1.7 Laser Pointer/NULL (shifted function) Switch.........................20

3.1.8 Az Position Control .................................................................21

3.1.9 El Position Control ..................................................................21

3.1.10 Backlight Control ....................................................................21

3.1.11 Power Switch..........................................................................21

3.1.12 SCAN Control .........................................................................22

3.1.13 Auto-Scan Switch ...................................................................22

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

viii

Table of Contents - Continued

Paragraph Title Page

3.1.14

Gain Control ...........................................................................22

3.1.15 Auto Gain Switch ....................................................................22

3.1.16 LEVEL Control........................................................................22

3.1.17 Auto Level Switch ...................................................................23

3.1.18 Tracker Window Control.........................................................23

3.1.19 SHIFT Switch..........................................................................23

3.1.20 POS (shifted function) / H HOLD Switch................................24

3.1.21 Strain Gauge ..........................................................................25

3.1.22 CAL (shifted function) / AF Switch..........................................25

3.1.23 POL / LLTV Switch .................................................................27

3.1.24 RNG. Switch (System Option)................................................27

3.1.25 CCD – IR Switch.....................................................................27

3.1.26 1.8X Extender Switch (System Option) ..................................27

3.1.27 ZOOM Rocker Control............................................................29

3.1.28 FOCUS Rocker Control..........................................................29

3.2 Menu Mode ...............................................................................30

3.2.1 Top Level Menu......................................................................32

3.2.2 Initial Setup Menu...................................................................33

3.2.3 Symbology Level Menu ..........................................................35

3.2.4 Platform Symbol Selection .....................................................36

3.2.4.1 Platform SGA Orientation ....................................................38

3.2.5 Hardware Configuration Menu ...............................................39

3.2.5.1 GPS Select Menu.................................................................40

3.2.5.2 RBH Select Menu.................................................................41

3.2.5.3 SGA Orientation Select........................................................41

3.2.6 Color scheme Menu ...............................................................44

3.3 System Start-Up Procedure ......................................................45

3.4 System Reset Procedure ..........................................................47

3.5 Shutdown Procedures...............................................................48

3.6 Initial Setup ...............................................................................48

3.6.1 Agency Name Setup...............................................................48

3.6.2 Date and Time Setup..............................................................49

3.6.3 Advanced Mode......................................................................50

3.7 Auto-Tracker .............................................................................51

3.7.1 Phase Correlation Mode (PCORR) ........................................52

3.7.2 Scene Lock Mode (SCENE)...................................................53

3.7.3 Centroid Statistical Mode (CENT STA) ..................................53

3.7.4 Centroid White Mode (CENT WHT) .......................................53

3.7.5 Centroid Black Mode (CENT BLK) .........................................54

3.7.6 Correlation Mode (CORR)......................................................54

3.8 Using the Auto-Tracker .............................................................54

3.8.1 Force Coast ............................................................................55

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

Table of Contents - Continued

Paragraph Title Page

3.9

Radar Bearing Mode.................................................................55

3.9.1 Basic Radar Bearing Indicators..............................................56

3.9.2 Radar Bearing Single-Shot Mode...........................................57

3.9.3 Radar Bearing Continuous Mode ...........................................57

3.10 Operational Check ....................................................................59

3.11 Auto-Scan Control.....................................................................60

3.11.1 SCAN and Slew Rate .............................................................61

3.12 Viewing on the Display Monitor.................................................61

3.12.1 IR Level...................................................................................62

3.12.1.1 Auto Level ............................................................................62

3.12.1.2 Manual Level........................................................................62

3.12.2 IR Gain....................................................................................62

3.12.2.1 Auto-Gain .............................................................................63

3.12.2.2 IR Gain Control ....................................................................63

3.12.3 Examples of Level and Gain...................................................63

3.13 Operating the IR Camera..........................................................63

3.14 Operating the CCD Camera......................................................64

3.15 Strain Gauge Operation ............................................................66

4. MAINTENANCE AND SERVICE INSTRUCTIONS.....................69

4.1 Introduction ...............................................................................69

4.2 Preventive Maintenance............................................................69

4.2.1 Cleaning SGA Lenses ............................................................69

4.2.2 System Wash-Down ...............................................................70

4.2.3 Troubleshooting......................................................................70

4.3 Preparation for Shipment and Storage .....................................71

APPENDIX A. Infrared Fundamentals ..................................................77

APPENDIX B. Acronyms and Abbreviations.........................................79

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

List of Figures

Figure Title Page

1-1 SeaFLIR II Imaging System Units...................................................4

1-2 Laser Aperture Label ......................................................................9

1-3 Laser Interlock Safety Label ...........................................................9

1-4 Laser Safety Switch (Key controlled)..............................................10

2-1 System Interconnect Diagram ........................................................14

3-1 Hand Control Unit ............................................................................16

3-2 Graphic Symbols.............................................................................20

3-3 SHIFT Display.................................................................................23

3-4 Non-Uniformity Correction (NUC) Display ......................................26

3-5 IR Camera Non-Uniformity Correction (NUC).................................26

3-6 White Hot Polarity Display ..............................................................28

3-7 Black Hot Polarity Display...............................................................28

3-8 Auto Scan Width Adjust Display .....................................................30

3-9 Top Level Menu ..............................................................................31

3-10 Initial Setup Menu .........................................................................33

3-11 Symbology Level Select Menu .....................................................35

3-12 Platform Symbol Select Menu ......................................................37

3-13 None Platform Symbol..................................................................37

3-14 Ship Platform Symbol ...................................................................37

3-15 Helicopter Platform Symbol ..........................................................37

3-16 Fixed Wing Platform Symbol ........................................................37

3-17 SGA Platform Orientation Select ..................................................38

3-18 Hardware configuration Menu.......................................................39

3-19 GPS Device Select Menu .............................................................40

3-20 GPS Device Selected (No GPS Data) ..........................................41

3-21 GPS Data Display .........................................................................41

3-22 Stale GPS Data Display................................................................41

3-23 NMEA (Radar) Select Menu .........................................................42

3-24 Radar Configuration Menu............................................................42

3-25 Baud Rate Select Menu ................................................................43

3-26 RBH Elevation Select Menu .........................................................43

3-27 Color scheme Select Menu...........................................................44

3-28 Color Schemes .............................................................................45

3-29 System Power Switch ...................................................................46

3-30 System Startup Standby Display ..................................................46

3-31 Agency Name Setup and Edit Display..........................................49

3-32 Date and Time Setup and Edit Display.........................................50

3-33 Radar Off-Line Display..................................................................56

3-34 Radar Bearing Invalid Data Display..............................................57

3-35 Radar Bearing Single Shot Mode Display ....................................58

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

List of Figures - Continued

Figure Title Page

3-36 Radar Bearing Continuous Mode Display.....................................59

3-37 Auto-Scan Field of Regard............................................................61

3-38 Examples of Level and Gain.........................................................65

3-39 Strain Gauge Control – Azimuth ...................................................67

3-40 Strain Gauge Control – Elevation .................................................67

4-1 Power Fault Chart ...........................................................................72

4-2 SGA Fault Chart..............................................................................73

4-3 Video/Graphic Fault Chart 1 ...........................................................74

4-4 Video/Graphic Fault Chart 2 ...........................................................75

List of Tables

Table Title Page

1-1 SGA Performance Characteristics..................................................5

1-2 Infrared Camera - Standard Configuration .....................................6

1-3 Infrared Camera - With 1.8X Extender ...........................................7

1-4 CCD Camera Performance Characteristics....................................8

1-5 Laser Pointer Eye Safety Data .......................................................10

1-6 Laser Pointer Optical Characteristics (Nominal).............................11

1-7 Control Electronics Unit Characteristics .........................................11

1-8 Hand Control Unit Characteristics ..................................................12

1-9 System Power Characteristics........................................................12

3-1 Shifted Functions ............................................................................24

3-2 Selectable Graphic Symbols...........................................................36

3-3 Tracker Mode Performance Summary............................................52

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

xii

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

xiii

SAFETY PAGE

Warnings and Safety Precautions

WARNING

Class 3b laser product per ANSI Z136.1-2000 is an eye

hazard if directed or reflected beam is viewed. This Laser

Pointer produces an invisible laser radiation that can cause

permanent loss of eyesight. The use of binoculars can

increase this risk. Table 1-5 lists the eye safety limits of the

Laser Pointer. The binocular eye safety range assumes the

specified binoculars; larger lenses will require a greater

safety range. It is the responsibility of the operator to

insure that the target and bystanders are outside the eye

safe ranges. (This warning is only applicable to the optional

laser pointer.)

WARNING

Voltages exist in the SeaFLIR II Imaging System. The

SeaFLIR II Imaging System must be de-energized (TURNED

OFF at Circuit Breaker) before installing or removing.

WARNING

Do not attempt to repair the SeaFLIR II Imaging System

components. The system contains many high precision

components representing several state-of-the-art

technologies. Without proper training and support

equipment, unauthorized maintenance could easily damage,

or misalign the system.

WARNING

The SeaFLIR II Imaging System is shipped with the elevation

axis brake locked. When removing the SGA from its

shipping case, do not try to rotate the ball in elevation

manually. Repeated un-powered rotation of the Gimbal will

cause damage to the Gimbal braking system.

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

xiv

CAUTION

Do not subject the SGA to operational airspeeds in excess

of 250 mph (218 knots), as this could cause damage to the

ferrofluidic seals.

CAUTION

Proper grounding of the SeaFLIR II Imaging System must be

accomplished at time of installation into the host platform.

Refer to the FLIR Interface Control Document (ICD),

18400-940. Additional service and installation information

can be obtained by contacting FLIR at (978) 901-8000.

Improper installation of the system will cause display

problems and can damage the system components.

CAUTION

Caution should be exercised at all times when operating the

laser pointer to ensure that personnel are not directly in

front of the laser when it is fired. The laser pointer should

not be used to range on personnel, marine biologics, or

animal life. Do not use magnified optics, such as

binoculars, when working around or in the path of the laser

beam.

CAUTION

Do not use cleaning fluids containing ammonia or acids.

They can damage the optical coatings on the windows. Use

only a soft cotton cloth or lens tissue dampened with

isopropyl alcohol or fresh water.

CAUTION

Do not use high-pressure water or air (over 2 PSI) to clean

the SGA. High-pressure water or air could cause damage to

the ferrofluidic seals located in the azimuth and elevation

axes of rotation. Use a low-pressure fresh water stream not

less than 0.5” diameter or other low pressure cleaning

method.

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

1. INTRODUCTION

1.1 Purpose and Scope of this Technical Manual

The SeaFLIR II Imaging System is equally at home on land, at sea, or in

the air. This manual is intended to provide the information necessary to

familiarize the user with the procedures needed to install, setup, operate,

shut down, and perform operator-level maintenance on the SeaFLIR II

Imaging System. There are two SeaFLIR II configurations both are

covered in this manual. The SeaFLIR II-C model is equipped with an IR

camera 1.8X optical extender to increase its standoff capability.

 SeaFLIR II

IR, Color CCD Camera

 SeaFLIR II-C

IR w/1.8X Ext., Color CCD Camera

1.2 General

The SeaFLIR II Imaging System provides the user with a remote

controlled day/night, high resolution, infrared (IR) imaging, color video

and an optional Laser Pointer capability. The platforms on which the

SeaFLIR II Imaging System can be installed range widely. It can be

installed and used on aircraft (fixed wing and helicopters), watercraft,

land vehicles or fixed locations. However, it is not intended for use on

high performance aircraft, speeds exceeding 250 mph (218 knots). The

SeaFLIR II Imaging System provides enhanced detection, recognition,

and identification of both stationary and mobile targets and the ability to

track (day/night). The SeaFLIR II Imaging System can also be used to

enhance the following types of operations:

Aerial Thermal Surveys Insertion and extraction operations

Airborne Law Enforcement Low visibility and night navigation

Border Patrol Mapping of navigational hazards

Coastal observation and

surveillance

Maritime interception

Combat search and rescue Reconnaissance and surveillance

Defense Search and Rescue

Drug interdiction Security

Exclusive Economic Zone Patrols Situational Awareness

Force Protection

Visit, board, search, and seizure

operations

Identification of friend or foe (IFF)

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

1.3 System Capabilities

The SeaFLIR II Imaging System is a gyro-stabilized platform that can

rotate a continuous 360

in both azimuth and elevation. The stabilization

enables the internal fiber optic gyroscopes to sense and remove

unwanted effects of motion and vibration in the elevation and azimuth

axes.

1.3.1 Key Features

Key features of the SeaFLIR II Imaging System are:

 Fiber Optic Gyroscope Stabilization – minimizing the effect of craft

vibration and motion.

 Continuous zoom IR and CCD optical systems – allowing

uninterrupted viewing of the imaging scene while zooming between

the maximum Wide and Narrow fields of view.

 1.8X IR Optical Extender (optional) – extends target recognition

capability and detection range.

 IR and CCD Auto focus systems – reducing the operator workload.

 Directional control – allows control of both azimuth and elevation

through a full 360 degrees.

 Ergonomic Hand Control Unit (HCU) – The SeaFLIR II Imaging

System’s HCU is designed to be held in the right hand but its

operation does not favor either a right or left-handed operator. The

pointing of the system is accomplished with the right thumb while all

other controls such as focus and zoom are accessible with either

hand. The controls on the face of the HCU are normally operated

with the left hand.

 Video Output – black and white standard for IR, and color for CCD

camera.

 National Television System Committee (NTSC) – 60 hertz (Hz) color

standard (United States)

 Phase Alternation by Line (PAL) – 50 Hz color standard (European)

 Closed Cycle Cooling – the IR detector is cooled by a built-in Sterling

micro-cooler.

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

1.3.2 Processing Capabilities

The central processing unit (CPU), located in the CEU, is based on the

industry PC/104 standard. Use of this format ensures the ability to

upgrade easily. The CPU software is written in the C language allowing

reliable software documentation and software upgrades. The CPU has

two types of memory. There is 512 KB of Flash EPROM where the

operating system is stored and 1 MB of RAM available for use during

system operation. Serial links are provided to the CPU through standard

RS-232 and RS-422 formats.

1.3.3 Video Recording Capability

Either camera image can be recorded with an on-board VCR or

down-linked through a microwave system. The video outputs are preset

for either U.S. (NTSC) or European (PAL) standards.

1.4 SeaFLIR II Imaging System

The SeaFLIR II Imaging System (Figure 1-1) consists of three primary

units. Two of the units, the Stabilized Gimbal Assembly (SGA), and the

Control Electronics Unit (CEU), are installed on the host platform. The

Hand Control Unit (HCU) is connected to the CEU and can be installed

and stored in a variety of methods.

1.4.1 Stabilized Gimbal Assembly (SGA)

CAUTION

Do not subject the SGA to operational airspeeds in excess

of 250 mph (218 knots), as this could cause damage to the

ferrofluidic seals.

The SGA is a gyro-stabilized unit containing an IR camera system with a

closed-cycle cooling system, a color CCD camera, an optional Laser

Pointer, azimuth and elevation rate sensors, preamplifiers, slip rings and

positioning torque motors, and an external hourly time meter to register

the operational time of the SGA. The SGA can rotate a continuous 360

in both azimuth and elevation, and both axes are driven with direct drive

torque motors. Since it uses no gears its operating motion works

smoothly and without backlash. This enables the internal rate gyros to

sense host platform motion and vibrations and remove these unwanted

effects without image jitter on the monitor. The IR camera allows the

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

operator to see in total darkness, through smoke, and other low visibility,

low contrast situations. The SeaFLIR II-C model is equipped with a 1.8X

optical extender giving it an increased standoff capability. The CCD

camera provides visible light imagery under normal and low light

conditions. The Laser Pointer provides IR illumination that can be

viewed with image-intensified night vision goggles. The stabilized

Gimbal system provides stable video during host platform vibration and

motion. The SGA performance characteristics are identified in Table 1-1.

U2J15

U2J3

U2J16 U2J7 U2J10

U2J12 U2J13 U2J14

U2J2

U2J1

C03-008

Control Electronics Unit (CEU)

Hand Control Unit

(HCU)

O/| MODE SYM

TRACKER

POSITION

Stabilized Gimbal Assembly

(SGA)

CCD

Camera

Lens

Laser Pointer

(Optional)

FLIR

Camera

Lens

Figure 1-1. SeaFLIR II Imaging System Units

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

Table 1-1. SGA Performance Characteristics

Parameter Characteristic

Gimbal type Elevation over azimuth, two axes of freedom

Field of regard

360 continuous in both axes

Stabilization

Three rate sensors, two axes, stabilization at

Nadir

Power consumption

200 watts average @ 28 Volts, Direct

Current (VDC), operating

Weight 28.3 lbs.

Size 9 inches diameter x 15.2 inches height

Slew rates

0 to 65 per second in both axes

Position accuracy 3 arc minutes

Kmax Acceleration

60sec/sec both axes

1.4.1.1 Gyro Stabilization

Stabilization is an essential part of the SeaFLIR II Imaging System.

Vibration and movement of the host platform can make viewing and

tracking targets difficult and even impossible. This is especially true

when the system is in the narrow field of view. The SeaFLIR II Imaging

System uses three rate-sensitive fiber-optic-gyros (FOG) (2 azimuth and

1 elevation) to compensate for vibration and motion of the host platform.

All gyros provide analog outputs. The amplitude of these outputs

corresponds to any rate or motion imparted to the gyro(s). Each gyro’s

analog signal is conditioned in the SGA and sent to the CEU as an error

signal. The error signal is used by servo control circuitry to create a

drive voltage for the respective torque motor. The torque motors

stabilize the SGA in two axes, azimuth and elevation. The rate gyros

used are fiber-optic-gyros with no spinning masses that are subject to life

limitations. The rate gyros do experience drift caused by electronic and

thermal changes over time. This appears as a command for the Gimbal

to slew. To reduce this effect, a gyro null circuit has been incorporated

into the SeaFLIR II Imaging System. The drift effect may be noticed

during initial system start-up. When this occurs, the operator has the

option to use either manual or activate an automatic null feature, to

cancel out the gyro drift. See paragraph 3.1.7 for the Gyro NULL

function.

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

1.4.1.2 Directional Control

Directional control is provided for both the elevation and azimuth axes

through a full 360 range of motion. The operator controls this

movement with the HCU Strain Gauge, which in turn sends a digital

signal to the CEU. The CEU then generates and transmits a signal to

the appropriate torque motor in the SGA.

1.4.1.3 Forward Looking Infrared Camera

The IR camera operates in the 3.4 to 5.0 micron (3.4 – 5.0μm)

wavelength region and is fitted with continuous zoom lenses that provide

a zoom range of 10:1 from 25mm through 250mm. The magnification of

the resulting image is up to 10 times. As the magnification increases, the

resolution increases so image quality degradation does not occur at

higher magnifications.

The IR detector (or imager) is the heart of the SeaFLIR II Imaging

System. The detector is an Indium Antimonide (InSb) Focal Plane Array

(FPA) operating at cryogenic temperatures (77K). The array is

integrated into a miniature dewar/cooler. FPA technology does not

require a mechanical scanning mechanism, as do some thermal

imagers. Instead, a mosaic of 76,800 discrete detectors, arranged in a

pattern of 320 by 240 elements (pixels), is used. Each element appears

as one point, or resolution element, in every image. Unlike a

conventional imager where a single detector element or a small array of

detectors is rapidly scanned over the entire scene, each element in the

FPA stays ”on” or "stares" continuously at the scene. This allows the

FPA to receive a larger number of infrared photons thus providing a very

high thermal sensitivity. Performance characteristics of the IR camera

are listed in Table 1-2.

Table 1-2. Infrared Camera - Standard Configuration

Parameter Capability

Sensor 320 x 240 pixel InSb FPA

Operating Wavelength 3.4 to 5.0 microns (3.4 – 5.0μm)

Zoom capability 10x continuous zoom

Nominal Field of View (FOV)

2.2 (H) x 1.7 (V) Narrow

21.7 (H) x 16.4 (V) Wide

Effective Focal Length, f/# 25mm to 250mm, f/4

Commercial in Confidence

Export Level 2

Issued to: AgustaWestland

CM Ref:4049

Valid on Day of Issue only.

Document will not be updated

Uncontrolled : 4256

Retrieval Date:07-Dec-10

Requested by Bower, Richard

Page is loading ...

FLIR SeaFLIR II Series User manual

Brand: FLIR

Model: SeaFLIR II Series

Type: User manual

This manual is also suitable for

Download PDF

report

FLIR SeaFLIR II Series User manual

This manual is also suitable for

FLIR SeaFLIR II Series User manual

Related papers

Other documents