Viceroy GPS Receiver

Superior Positioning With 100+ Years Of On Orbit Performance

The Viceroy GPS Spaceborne Receiver has the most on orbit heritage of any commercial GPS Receiver on the market. The Viceroy provides position, velocity and time information for low Earth orbiting satellites. The Viceroy's low signal acquisition and tracking supports geo-synchronous Earth orbit (GEO) side lobe tracking.

Design based on legacy space qualified digital design
20 years of trouble-free spaceflight heritage
Same reliable position, velocity, time, pseudorange and carrier phase at 1Hz
Same form-factor and interface control as heritage Viceroy receiver

Features
Specifications
Literature

Features

General Dynamics’ Viceroy™-4 Global Positioning System (GPS) Spaceborne Receiver provides position, velocity, and time information for Low Earth Orbit (LEO) and Geostationary Earth Orbit (GEO) applications. Performance and satellite visibility are enhanced through the use of dual antennas; each of the 18 GPS channels can be assigned to either antenna. The design supports RS-422 or MILSTD-1553 bus interfaces.

Space Qualified Digital Design
Full Spaceborne Capability
Autonomous Operation
Pseudorange and Integrated Carrier Phase at One Second Rate
One PPS Clock Output Synchronized to GPS Time
Radiation Hardened Static RAM
Up to 12 Receive Tracking Channels
53 Cubic Inches
2.4 Pounds
20 to 34 VDC Operation
Improved Radiation Hardened Digital Electronics
12 Channels Support All-in-View Tracking
Dual Antenna – Any Channel Assigned to Either Antenna
Fast Cold Start Mode Simplifies Integration and Autonomous Operation
Low Signal Acquisition and Tracking Supports GEO Sidelobe Tracking
Enhanced Resolution 1 Pulse per Second Output
Time-Strobe Input

Specifications

Viceroy-4 GPS Receiver Data Sheet	View Document
Receiver Architecture	12 channels with enhanced fast acquisition Dual antenna – any channel to either antenna L1: 1575.42 MHz, C/A code Carrier-aided code tracking Based on legacy Viceroy architecture (hardware and software)
Input/Output	RS-422 serial I/O (standard) MIL-STD-1553B (optional) X.25 protocol with ECEF position, velocity, time, longitude, latitude, pseudorange, carrier phase One pulse per second (GPS, UTC, or Measurement Epoch Time) Time strobe input signal 9-pin male Sub-D for prime power 37-pin female Sub-D for command and telemetry
Solution Accuracy	Autonomous Position: < 15 meters, 1 sigma Autonomous Velocity: < 0.05 meters/second, 1 sigma 1PPS time: < 100 ns, 1 sigma
Time to First Fix	60 seconds, cold start
Orbital Dynamics	Altitude: LEO to GEO (200 km – 45,000 km) Velocity: up to 16,000 meters/second Acceleration: 1G
Optional and Custom Features	Serial Port – 1553 or standard RS422 Code Types: L1 C/A Kalman filter or least squares solution Single string or redundant configurations Low signal acquisition and tracking to 20 dB-Hz (GEO side lobes) Precision internal reference Ovenized Crystal Oscillator (OCXO) External 10 MHz reference oscillator Time Strobe Input: <100 ns, 1 sigma
Antenna	Active microstrip patch antenna (LEO), 0.4 lbs High gain multi-element antenna (GEO), 1.0 lb Power supplied by Viceroy-4 SMA female connection on receiver and antenna
Physical/Environmental	Size: 6.0” x 5.2” x 1.7” (152 x 132 x 43 mm) Weight: 2.4 lbs (1.1 kg) max DC Power: 7 W max; steady-state tracking (20-34 V) Vibration: 17 Grms Shock: 1750 G @ 500 Hz Temperature: -20°C to +60°C

Literature

Viceroy-4 GPS Receiver Datasheet [PDF]

Features
Features

General Dynamics’ Viceroy™-4 Global Positioning System (GPS) Spaceborne Receiver provides position, velocity, and time information for Low Earth Orbit (LEO) and Geostationary Earth Orbit (GEO) applications. Performance and satellite visibility are enhanced through the use of dual antennas; each of the 18 GPS channels can be assigned to either antenna. The design supports RS-422 or MILSTD-1553 bus interfaces.
- Space Qualified Digital Design
- Full Spaceborne Capability
- Autonomous Operation
- Pseudorange and Integrated Carrier Phase at One Second Rate
- One PPS Clock Output Synchronized to GPS Time
- Radiation Hardened Static RAM
- Up to 12 Receive Tracking Channels
- 53 Cubic Inches
- 2.4 Pounds
- 20 to 34 VDC Operation
- Improved Radiation Hardened Digital Electronics
- 12 Channels Support All-in-View Tracking
- Dual Antenna – Any Channel Assigned to Either Antenna
- Fast Cold Start Mode Simplifies Integration and Autonomous Operation
- Low Signal Acquisition and Tracking Supports GEO Sidelobe Tracking
- Enhanced Resolution 1 Pulse per Second Output
- Time-Strobe Input

Specifications

Viceroy-4 GPS Receiver Data Sheet	View Document
Receiver Architecture	12 channels with enhanced fast acquisition Dual antenna – any channel to either antenna L1: 1575.42 MHz, C/A code Carrier-aided code tracking Based on legacy Viceroy architecture (hardware and software)
Input/Output	RS-422 serial I/O (standard) MIL-STD-1553B (optional) X.25 protocol with ECEF position, velocity, time, longitude, latitude, pseudorange, carrier phase One pulse per second (GPS, UTC, or Measurement Epoch Time) Time strobe input signal 9-pin male Sub-D for prime power 37-pin female Sub-D for command and telemetry
Solution Accuracy	Autonomous Position: < 15 meters, 1 sigma Autonomous Velocity: < 0.05 meters/second, 1 sigma 1PPS time: < 100 ns, 1 sigma
Time to First Fix	60 seconds, cold start
Orbital Dynamics	Altitude: LEO to GEO (200 km – 45,000 km) Velocity: up to 16,000 meters/second Acceleration: 1G
Optional and Custom Features	Serial Port – 1553 or standard RS422 Code Types: L1 C/A Kalman filter or least squares solution Single string or redundant configurations Low signal acquisition and tracking to 20 dB-Hz (GEO side lobes) Precision internal reference Ovenized Crystal Oscillator (OCXO) External 10 MHz reference oscillator Time Strobe Input: <100 ns, 1 sigma
Antenna	Active microstrip patch antenna (LEO), 0.4 lbs High gain multi-element antenna (GEO), 1.0 lb Power supplied by Viceroy-4 SMA female connection on receiver and antenna
Physical/Environmental	Size: 6.0” x 5.2” x 1.7” (152 x 132 x 43 mm) Weight: 2.4 lbs (1.1 kg) max DC Power: 7 W max; steady-state tracking (20-34 V) Vibration: 17 Grms Shock: 1750 G @ 500 Hz Temperature: -20°C to +60°C