16 Channel High Performance GNSS Anti-Jamming Antenna for Defence Up to 15 Interference Sources
Product Details
GNSS technology has revolutionised many high-precision industries, such as agriculture, mining, and marine, as well as modern warfare. These applications depend on satellite technology for accurate positioning, navigation, and timing (PNT).
However, GNSS signals received on earth are weak and susceptible to interference and intentional jamming. A simple low-power jammer can overpower GNSS signals within a large area, denying PNT solutions.
GNSS anti-jam technology is quickly evolving. Until recently, size and cost considerations meant anti-jam systems were only feasible for expensive assets, such as strategic aircraft and capital ships. Advancements in low size, weight, and power (SWaP) and commercial availability have enabled more widespread adoption of anti-jam technology.
Hexagon | NovAtel's approach to the problem is to build a range of compact and affordable anti-jam systems for land, sea, air (including unmanned aerial systems), and fixed installations.
Anti jamming GNSS systems are advanced solutions designed to detect, suppress, and mitigate intentional or unintentional interference, ensuring reliable positioning, navigation, and timing even in highly contested environments. As GNSS disruptions become more frequent worldwide, these technologies have shifted to a critical component across defense, aviation, maritime, and autonomous systems.
GAJT is a null-forming system that preserves the antenna's view of the GNSS satellites while ignoring jammers, ensuring the satellite signals required to compute precise position remain available. GAJT works with any installed GNSS receiver and is ready for M-Code. The GAJT range of products provides anti-jam performance for every platform and is available off-the-shelf for rapid deployment.
The performance of GAJT is expressed as interference suppression and varies depending on the model. The performance is scenario-dependent, and the whole system performance is the sum of GAJT interference suppression plus that provided by the installed receiver itself.
GNSS Anti-Jamming Navigation Kit
The GNSS Anti-Jamming Navigation Kit consists of an array antenna, anti-jamming unit, and GNSS positioning unit. Dual Frequency8 Channel Anti-InterFerence Terminal is a compact satellitenavigation and anti-interference integrate system tailored for civiliandrones and industrial users.lt supports dual-frequency signal receptionof BeiDou-3 RNSS B1/B3 and features anti-wideband interference capability on Bl/B3 frequencies with a maximum interference tolerance ofup to 3 simultaneous interference source.Interally integrated with antenna arrays,anti-interference components,and satellite navigation re-ceivers,it serves reliable navigation in fields such as drones and un.manned vehicles,protecting user terminals from various unintentiona!interferences and malicious attacks,significantly enhancing PNT(Positioning,Navigation,and Timing)information security.
The array antenna is capable of receiving signals across 8 channels covering the B1I/B1C/L1 C/A/E1/G1 frequency bands for anti-jamming processing. The system supports simultaneous suppression of interference across up to seven B1I/B1C/L1 C/A/E1/G1 interference sources while maintaining GNSS positioning capability.
Supported interference types include narrowband, broadband, pulsed, swept-frequency, and combined interference.
The anti-jamming unit incorporates a polarization-, spatial-, temporal-, and frequency-domain anti-jamming processing algorithm. By integrating multidimensional characteristics across polarization, spatial, time, and frequency domains, the system provides effective suppression against various forms of GNSS interference.
The GNSS positioning unit supports the reception, decoding, and processing of multi-constellation and multi-frequency satellite signals, providing high sensitivity and high-accuracy positioning performance.
The overall system is designed to maintain stable operation in dynamic environments while providing strong anti-jamming performance under complex electromagnetic conditions. It outputs real-time, highly reliable PNT (Position, Navigation and Timing) information and can be integrated into various platforms requiring reliable navigation and positioning in challenging operational environments.
The detailed configuration of the HT-GGGB008NW GNSS Anti-Jamming Navigation Kit is shown below.
| Parameter | Specification |
|---|---|
| Anti-Jamming Frequency Bands | B1I / B1C / L1 C/A / E1 / G1 (1558–1609 MHz) |
| Supported Interference Types | Narrowband, broadband, pulsed, swept-frequency, and combined interference |
| Anti-Jamming Capability (J/S) | Single Interferer: ≥120 dBc; Three Interferers: ≥110 dBc; Seven Interferers: ≥100 dBc |
| Positioning Accuracy | Horizontal: ≤10 m (RMS); Vertical: ≤10 m (RMS) |
| Velocity Accuracy | ≤0.2 m/s (RMS) |
| Cold Start Time | ≤45 s |
| Hot Start Time | ≤10 s |
| Re-acquisition Time After Loss of Lock | ≤3 s |
| Dynamic Performance — Mode 1 | Speed: ≤515 m/s; Acceleration: ≤4 g |
| Dynamic Performance — Mode 2 | Speed: ≤1000 m/s; Acceleration: ≤10 g; Jerk: ≤3 g/s (optional) |
| Supported Protocols | RTCM 2.x, RTCM 3.x, NMEA-0183 (default) |
| Dimensions | 150 × 150 × 35 mm (L × W × H) |
| Weight | ≤690 g |
| Operating Voltage | 9–32 V DC |
| Power Consumption | ≤18 W |
| Operating Temperature | −40°C to +85°C |
| Storage Temperature | −55°C to +85°C |
The HT-GGGB008NW GNSS Anti-Jamming Navigation Kit measures:
150 mm × 150 mm × 35 mm (L × W × H)
Standard enclosure color: Signal White.
Custom colors are available upon request.
Figure 2. Mechanical Dimensions (Unit: mm)
The power/data connector is J30J-21ZK.
| Pin | Signal | Function | Description / Remarks |
| 1 | VCC | Power Input | 9–32 V DC |
| 2 | VCC | Power Input | 9–32 V DC |
| 3 | VCC | Power Input | 9–32 V DC |
| 4 | GND | Power Ground | GND |
| 5 | GND | Power Ground | GND |
| 6 | GND | Power Ground | GND |
| 7 | RS232-RX1 | Serial Port 1 Input | Anti-Jamming Unit — RS232 Port 1, default baud rate 115200 bps |
| 8 | RS232-TX1 | Serial Port 1 Output | Anti-Jamming Unit — RS232 Port 1 |
| 9 | GND | Digital Ground | Serial Port Digital Ground |
| 10 | RS422-TX2+ / RS485-A2 | Serial Port 2 TX+ / RS485 A Output | Anti-Jamming Unit — RS422/RS485 Port 2, default baud rate 115200 bps |
| 11 | RS422-TX2− / RS485-B2 | Serial Port 2 TX− / RS485 B Output | Anti-Jamming Unit — RS422/RS485 Port 2 |
| 12 | RS422-RX2+ | Serial Port 2 RX+ | Anti-Jamming Unit — RS422 Port 2 |
| 13 | RS422-RX2− | Serial Port 2 RX− | Anti-Jamming Unit — RS422 Port 2 |
| 14 | RS232-RX3 | Serial Port 3 Input | GNSS Positioning Unit — RS232 Port 3, default baud rate 115200 bps |
| 15 | RS232-TX3 | Serial Port 3 Output | GNSS Positioning Unit — RS232 Port 3 |
| 16 | GND | Digital Ground | Serial Port Digital Ground |
| 17 | RS422-TX4+ / RS485-A4 | Serial Port 4 TX+ / RS485 A Output | GNSS Positioning Unit — RS422/RS485 Port 4, default baud rate 115200 bps |
| 18 | RS422-TX4− / RS485-B4 | Serial Port 4 TX− / RS485 B Output | GNSS Positioning Unit — RS422/RS485 Port 4 |
| 19 | RS422-RX4+ | Serial Port 4 RX+ | GNSS Positioning Unit — RS422 Port 4 |
| 20 | RS422-RX4− | Serial Port 4 RX− | GNSS Positioning Unit — RS422 Port 4 |
| 21 | PPS | Pulse Per Second | GNSS Positioning Unit PPS output, 3.3 V LVTTL |
- Multi-Constellation GNSS Support
- Multi-Frequency Anti-Jamming
- Up to 7 Interference Sources Suppression
- Polarization, Spatial, Temporal and Frequency-Domain Anti-Jamming Processing
- Narrowband and Broadband Interference Suppression
- Pulsed and Swept-Frequency Interference Suppression
- High-Accuracy GNSS Positioning
- Fast Re-acquisition After Loss of Lock
- High-Dynamic Navigation Capability
- Real-Time PNT Output
- Compact and Lightweight Design
- Wide Operating Temperature Range: −40°C to +85°C
- 9–32 V DC Wide-Range Power Input
The module is suitable for integration into platforms requiring reliable GNSS positioning and navigation in complex electromagnetic environments, including:
- Unmanned aerial systems (UAS)
- Autonomous platforms
- Ground vehicles
- Marine platforms
- Navigation and positioning equipment
- High-dynamic mobile platforms
- GNSS-denied or GNSS-contested environments
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