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KEY FEATURES/USER BENEFITS
Fifth-generation SAASM-based design Dual-frequency (L1/L2) tracking Enhanced Direct-Y code acquisition/cold start High anti-jamming immunity 24-channel all-in-view tracking and navigation Field-reprogrammable software Designed for high-g vibration High-speed serial interface SAASM extended functions including black-key Clock recalibration for extended storage 24-channel SAASM-based design >85 dB J/S Performance*** High-rate aiding SA/AS capable** Fast Direct-Y capability All-in-view track and navigation High accuracy Antenna masking selection Precise time transfer (timing pulse not needed) Continuous ionospheric corrections*
OVERVIEW
The IGAS is the first integrated Global Positioning System and Anti-Jam
system in the proven family of Rockwell Collins munitions receivers. The receiver
utilizes 24-channel dual frequency all-in-view navigation, offering high performance
GPS for tightly coupled GPS/INS (Global Positioning System/ Inertial Navigation
System) integrations. It is derived from the field-proven 12-channel NavStrike™
and Joint Direct Attack Munitions (JDAM) receivers. The IGAS incorporates the advantages of the most advanced GPS technologies
available today: enhanced Direct-Y acquisition, 24-channel all-in-view navigation,
high jamming immunity, and fast initial acquisitions. The IGAS is a low cost, small size, high accuracy, and highly reliable
system that has been specifically designed to meet the mission needs of missile
and munitions applications. The IGAS provides accurate GPS navigation either
as a stand-alone system or when integrated with an existing INS or Doppler
Reference System. This integrated system offers full Precise Positioning Service (PPS)
accuracy. Simultaneous L1/L2 operation provides real time ionospheric corrections
for further accuracy enhancements. Its primary communication interface is
a high-speed RS-422 serial port. The Anti-Jam solution utilizes 12-beam steering.
This All-In-View Beam Steering ensures signals from all satellites in view
will receive the full benefits of the system’s AJ performance.
Additionally this system has an Ultra Tight Coupling (UTC) interface option. Modular design and field-programmable software ease maintenance, provide
a growth path, and reduce life-cycle cost for use in various jammed environments.
Delivery is assured by using common critical components, processes and manufacturing
lines that deliver over 100,000 Selective Availability Anti-Spoofing Module
(SAASM)-based GPS receivers per year.
SYSTEM CHARACTERISTICS
| Receiver | L1
frequency, C/A and P or Y code** L2 frequency, P or Y code** | | Dynamics | Velocity:
>1,200 m/sec maximum Acceleration: 10 g | | TTFF | <10
sec direct-Y - time uncert: ~10 µs <26 sec direct-Y -
time uncert: ~10 ms 77 s nominal cold start w/o initialization
data | | Time accuracy | <100
nanoseconds RMS | | Position accuracy | <3
meters CEP** <2 m CEP typical | | Velocity accuracy | <0.07
m/sec RMS (typical) | | Altitude | >100,000
ft** | | Position update rate | Unaided - 1
Hz pseudo- range based and 10 Hz propagated INS-aided - 1
Hz pseudo- range based and 4-25 Hz dependent on aiding rate | | Crypto key input | Serial
port, KYK-13/KOI-18/ CYZ-10** | | MTBF | >6,500 hours |
INTERFACES
Serial data: RS-422, up to 230 Kbaud 1 PPS/Timemark/HaveQuick Four L1/L2 RF antenna ports, keyed Keying (DS-101/DS-102/high-speed serial port) CRPA power/control
PHYSICAL CHARACTERISTICS
| Power | <12
watts continuous | | Weight | 2 pounds maximum | | Size/volume | 4.35"
W x 5.15" H x 0.9" D maximum | | Temperature range | -54°C
to +74°C (continuous) -54°C
to +90°C (non-operating) | | Shock | 150 g operating |
* When anti-jam provides for dual frequency operation. ** Export of Precise Positioning Service (PPS) units is authorized for
GPS Memorandum of Understanding countries only. PPS security modules must
be obtained through Foreign Military Sales (FMS) procurement. *** AJ performance is based on 3 spatially diverse BB Jammers. Full
performance is classified.
SUPPORT OFFERINGS
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE. For more information contact: Rockwell Collins
400 Collins Road NE, Cedar Rapids, IA 52498
Tel: 800.321.2223 or 319.295.5100
Fax: 319.295.4777 E-mail: <collins@rockwellcollins.com>
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