Powered by Trimble® Technology
The NAVAIS NS-990 is a high-performance professional GNSS receiver engineered for reliable centimetre-level positioning and continuous operation in challenging environments. Powered by the proven Trimble GNSS engine, it combines multi-constellation, triple-frequency tracking with robust communications for surveying, machine control, marine navigation, autonomous systems, precision agriculture and geospatial monitoring.
Trimble Maxwell™ 7 technology and 336 GNSS tracking channels provide rapid RTK initialization, advanced multipath mitigation and dependable positioning availability.
Key Features
- Trimble Maxwell™ 7 GNSS processing technology
- 336-channel multi-constellation GNSS engine
- Triple-frequency support across major constellations
- Centimetre-level RTK positioning accuracy
- Trimble Everest Plus™ multipath mitigation
- RF spectrum monitoring and interference analysis
- Trimble RTX and OmniSTAR correction-service support
- Ethernet, USB, CAN and RS232 communications
- Position update rates up to 50 Hz
- Web-based configuration and monitoring
Comprehensive GNSS Support
| Constellation | Supported Signals |
|---|---|
| GPS | L1 C/A, L2E, L2C, L5 |
| GLONASS | L1 C/A, L2 C/A, L3 CDMA |
| Galileo | E1, E5A, E5B, E5 AltBOC, E6 |
| BeiDou | B1, B2, B3 |
| QZSS | L1 C/A, L1 SAIF, L2C, L5 |
| IRNSS | L5 |
| SBAS | L1 C/A, L5 |
| MSS L-Band | Trimble RTX and OmniSTAR |
Positioning Performance
| Tracking Channels | 336 |
|---|---|
| RTK Initialization | Typically < 8 seconds |
| Initialization Reliability | >99.9% |
| Position Update Rate | Up to 50 Hz |
| Position Latency | <20 ms |
| Horizontal Velocity Accuracy | 0.007 m/s |
| Vertical Velocity Accuracy | 0.020 m/s |
| RTK Horizontal Accuracy | 0.008 m |
| RTK Vertical Accuracy | 0.015 m |
Advanced Technologies
Trimble Maxwell™ 7
Advanced triple-frequency processing provides faster and more reliable positioning across GPS, GLONASS, Galileo and BeiDou.
Trimble Everest Plus™
Advanced multipath mitigation helps preserve accuracy around buildings, machinery and other reflective environments.
RF Spectrum Monitoring
Integrated interference analysis supports operation in degraded or congested radio-frequency environments.
RTX and OmniSTAR
Supports precise positioning services without a local base station where compatible correction services are available.
Communications and Protocols
- USB 2.0 device port
- Ethernet LAN port
- 3 × RS232 ports and 1 × CAN port
- 1 PPS output and event marker input
- NTRIP client, server and caster
- RTCM 2.x, RTCM 3.x, CMR, CMR+ and sCMRx corrections
- NMEA 0183, Trimble GSOF and NMEA 2000 outputs
Environmental Specifications
- Operating temperature: -40°C to +75°C
- Storage temperature: -55°C to +85°C
- Humidity: 5% to 95% non-condensing
- Operating shock: ±40 g
- Operating vibration: 6.2 gRMS
Typical Applications
RTK surveying, GNSS base stations, CORS networks, precision agriculture, marine navigation, machine control, autonomous vehicles, GIS mapping, infrastructure monitoring, and geospatial or scientific applications.