The first and only dual frequency Attitude Determinator gives you the most reliable 3 Dimensional GPS position
JNS Gyro-4 from Javad Navigation Systems (JNS) is the first and the only dual frequency satellite-based attitude system. If you ever doubted the reliability of GPS attitude systems it was because you used single frequency systems. The effective 86 cm dual frequency wavelength (compared to 19 cm of single frequency) makes JNSGyro-4 the most reliable and the fastest-to-settle attitude system in the world. JNSGyro-4 is actually four 20-channel geodetic quality dual frequency GPS (GLONASS optional) receivers packaged in one small box 11 x 9 x 13 cm, that is in turn connected to four antennae. The dual frequency code and carrier data from four antennae are processed to determine the three orientation angles and three dimensional position up to 20 times per second. The JNSGyro-4 can also be operated in RTK or DGPS mode from an external base station to provide highly accurate position and velocity
Techincal Specifications:
Tracking Specifications:
20 L1+L2 channels GPS, GLONASS, WAAS on four boards
Co-Op Tracking (high satellites help low satellites)
Low signal tracking (down to 30 dB*Hz)
Fast acquisition and fast re-acquisition
Reacquisition < 1 sec
Up to 30 g's of dynamic
Almost unlimited altitude and velocity (for authorized users)
Advanced Multipath Mitigation
Cold start < 60 sec
Warm start < 10 sec
Performance Specifications:
Real time position accuracy: Autonomous ~3.0 [m] 3D RMS
Carrier Phase Differential: ~0.01 [m] 3D RMS
Real time attitude accuracy :
Heading ~ 0.1/L [deg] RMS
Roll/Pitch: ~ 0.25/L [deg] RMS
L = the antenna separation in [m]
Physical Specifications:
Dimensions (mm): 92 x 112 x 130.8
Weight (kg): 1.3
Power Specifications:
Battery External
External power input: 10 to 40 Volts DC, 0.7A @12V
5V DC on antenna output
Power Consumption: ~8.5 Watt
Environmental Specifications:
Packaging Weatherproof, aluminum extrusion
Storage Temperature: –40oC to +75oC
Operating Temperature: -40oC to +55oC
GPS Antenna Specifications:
GPS Antenna: 4 External
Radio Specifications:
Radio Modem: External
I/O:
Communication Ports: 7 serial (RS232) ports
Other I/O signals One 1pps, one event
marker
Status indicator Four 3-color LED's (4 pairs for each board), two function keys (MINTER)
Memory & Recording:
Internal Memory: Up to 1 Gb
Raw Data Recording: Up to 20 times per second
Data Type: Code and carrier from L1 and L2 of GPS
Data Outputs:
RTCM 104 version 2.1 and 2.2
CMR
NMEA 0183 version 2.1, 2.2, 2.3 and 3.0
Multiple Base RTCM
Geoid and Magnetic Variation models
RAIM
Different Datums supported
Other Outputs: JPS Format
Output Rate Up to 20 times per second
Technical Specifications:
Multipath Rejection Strobed Sequence Sampler
RTK Solutions up to 20 times per second
Common quartz clock for all boards
