Monarch GPS Receiver
This product has been discontinued
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Features
General Dynamics’ Monarch Precise Positioning Service, Global Positioning Service (PPS-GPS) receiver is designed to meet demanding requirements for any Earth-orbital missions in sight of the GPS constellation. Our use of advanced digital signal processing technology has set a new standard for spaceborne receiver pseudo-range and carrier phase performance, while affording significant improvements in reliability, radiation hardness and power dissipation. A modular approach to the mechanical design, combined with software/firmware flexibility, allows easy customization for user-specific applications.
General Dynamics' Monarch Receiver provides precise positioning service position, velocity and time information for Department of Defense low Earth orbit (LEO) and geo-synchronous Earth orbit (GEO) applications. The Monarch includes SAASM (anti-spoof) security features.
- Qualified and tested for the space environment: pyrotechnic shock, random vibration, thermal-vacuum, EMI/EMC, natural radiation, and SEU/SEL
- Modular design allows for multiple configuration options
- 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 coorbiting spacecraft.
- Precision time stamping allows unprecedented accuracies in space
- Pps 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
- Uses the radiation hardened Key Data Processor (KDP)
- Available In LEO, MEO or GEO configurations
- Granted the navstar Global Positioning System (GPS) Joint Program Office (JPO) SAASM security approval
Literature
Specifications
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Monarch GPS Receiver Data Sheet
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View Document
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| Type of Service | Precise Position Service (PPS) |
| Number of Simultaneous Antennas | 1 or 2 |
| Frequencies | L1 & L2 |
| Signal Power | L1 C/A -135 dBm min. L1 P(Y) -138 dBm min. L2 P(Y) -138 dBm min. |
| Number of Channels | 12 |
| Reference Oscillator* | Internal OCXO (user supplied optional) |
| Interface* | MIL-STD-1553B or NASA STD RIU (optional 100 record history buffer) |
| Pseudo-range | 25 cm (1σ); 15 cm typical |
| Pseudo-range Bias | < 5 cm (1σ); 3 cm typical |
| Carrier Phase | 0.35 cm (1 sigma/1 sec); 0.15 cm typical |
| Battery | 1794AS0953A/U |
| Carrier Phase Integrity | 0.001 (prob of disruption/hr) |
| Navigation** (10 sec update) | Absolute Position: 8.5 m (1σ); 3 m typical Absolute Velocity: 2 cm/s (1σ); 0.7 cm/sec typical Clock Offset Solution Error: 20 ns (1σ); < 5 ns typical Relative Position: 0.5 m (1σ); 0.25 m typical Relative Velocity: 0.005 m/s (1σ) Relative Clock Offset: 4 ns (1σ) |
| Time Tag Measurements | Coarse Time Transfer TTL In/Out: 100 ns (1σ) Precision Time Transfer ECL In/Out: 20 ns (1σ); 5 ns typical Relative Time Transfer: 4 ns (1σ) |
| Startup Time | Cold: 35 minutes (Pf > 90%, typ 15 minutes w/key data) Warm: 25 minutes (Pf > 90%, typ 3 minutes w/key data) |
| Physical Characteristics | Envelope Dimensions: 8.06”L x 7.85”W x 5.52”H Weight: 8.2 pounds nominal Power: 25 W max; 19 W steady state typ |
| Environmental Capabilities | Radiation: 100 krads Single Event Upset: < 1 per year Single Event Latchup: Immune Reliability: 0.91 @10 years, 35°C baseplate, 100% duty cycle Random Vibration: 16.6 Grms Pyro Shock: 3000 G Temperature: -34 to +71°C Orbital Dynamics: LEO, MEO, GEO*** |
