Sentinel Lite M-Code GPS Receiver
Accurate M-Code certified positioning service in space
General Dynamics’ Sentinel® Lite M-Code GPS Receiver provides Precise Positioning Service position, velocity, and time information for Low Earth Orbit (LEO) and Geostationary Earth Orbit (GEO), and Medium Earth Orbit (MEO) applications. HEO orbits is also available. Performance and satellite visibility are enhanced through the use of dual antennas; each of the 64 GPS channels can be assigned to either antenna.
- Design Based on Legacy Monarch™ GPS Receiver Space-Qualified Digital Design
- Affordable solution for short-term missions with the same Superior performance as our Standard Sentinel product
- 1,000+ Equivalent Years of Accumulated Trouble-Free DoD Space Heritage: > 6M Orbits
- Same Reliable Position, Velocity, Time, Pseudorange and Carrier Phase @ 10 Update Range
- Optional Relative Navigation Position, Velocity, and Time Modes
- RS-422 I/O Interface and Control, Protocol similar to our Legacy Viceroy® C/A Receiver
Features
- LEO, GEO capable with MEO and HEO option
- GEO Sidelobe Acquisition and Tracking Algorithms enable continuous PNT availability
- Fast Acquisition Processor enables rapid COLD start capability
- Integrated Anti-Jam Technology and anti-spoof algorithms enable superior performance in GPS contested and denied environments
- 64 Channels, L1 and L2 Capable
- C/A, P(Y) and Modernized M-Code, with optional L2C civil signal
- Provides Near Real-time Position, Velocity and Time Measurements for Superior User Performance
- Relative Navigation Capability Allows for Differential Position, Velocity and Time Determination Between Co-orbiting Spacecraft (Optional)
- Precision Time Stamping Allows Unprecedented Accuracies in Space
- Precise Position Service Key Management Supports All Selective Availability Anti-spoof Module (SAASM) Unique Keying
- Single or Dual Antenna Capability Allows the Spacecraft User Installation Flexibility and Performance
- Qualified and Tested for the Space Environment: Pyrotechnic Shock, Random Vibration, Thermal-vacuum and EMI/EMC (Tailored Mil-Std-461F)
Specifications
Sentinel Lite M-Code GPS Receiver Data Sheet |
View Document |
|---|---|
| Receiver Architecture | 64 Channels PPS-GPS C/A, P(Y), M-Code Channels, L2C available as an option Dual Antenna – any channel to either antenna Frequencies & Codes: L1 & L2, C/A Code, P(Y), M-Code, L2C optional Narrow Bandwidth Acceleration-Aided Carrier/Code Tracking Tracking and Navigation Algorithms based on Monarch-M GPS Receiver Kalman Filter-based navigation solution with integrated high fidelity orbit propagator bridges gaps between GPS outages On-Orbit Software Reprogrammable |
| Input / Output | RS-422, Follows Legacy Viceroy Receiver ICD One Pulse per Second (GPS, UTC, or Measurement Epoch Time) Time Stamp Input Signal, measures the time of an external pulse |
| LEO Solution Accuracy | Autonomous Position: 4.0 meters, 1 sigma, < 1 meter typical Autonomous Velocity: < 2 cm/sec, 1 sigma, < 0.5 cm/sec typical Clock and 1PPS Absolute: <20 ns 1 sigma, < 5 ns typical Time Strobe Input: < 50 ns, 1 sigma Optional Relative PVT Mode: 0.5m, 0.5 cm/sec, 4 ns (1 sigma) |
| GEO Solution Accuracy | Autonomous Position: 25 meters, 1 sigma, < 5 meter typical Autonomous Velocity: < 2 cm/sec, 1 sigma, < 0.5 cm/sec typical Clock and 1PPS Absolute: < 50 ns 1 sigma, < 5 ns typical Time Strobe Input: < 50 ns, 1 sigma |
| Cold Start Time to First Fix (self-test complete & assumed keyed) | LEO < 10 minutes, 67% probability, 4 min Typical GEO < 15 minutes, 90% probability, 8 min Typical |
| Orbital Dynamics | Altitude: LEO, GEO (200 km – 45,000 km), MEO & HEO optional Velocity: up to 16,000 meters/second Acceleration: 1G |
| Optional and Custom Features | External Reference Oscillator or Internal Precision EMXO GEO Sidelobe Acquisition and Tracking Software High Dynamics Acquisition & Tracking |
| Physical/Environmental | Radiation: 50 Krads Single Event Upset: < 1 per year Single Event Latchup: Immune Reliability: 0.95, 5 year, 30°C Baseplate, 100% duty cycle Vibration: 16.6 Grms Pyro Shock: 2000 G Temperature: -34°C to +71°C Size: 180 x 160 x 60 mm-Envelope Weight: < 2.5 kg DC Power: < 9w typical LEO (dual antenna), < 8w typical GEO (single antenna) |
The Next Generation of Secure Position, Navigation and Timing Technology Whitepaper
The Department of Defense is now focused on satisfying the need to provide assured position, navigation and timing (PNT) – or assured PNT – and General Dynamics is answering that call by developing new antenna designs, power amplifiers, receivers, waveform generators and related capabilities that are more resilient to threats.
