HALO Smart APNT Antenna
Anti-Jam Antenna array for GPS-denied environments
HALO™ is a “Smart Antenna” that provides a 5-element antenna array with integrated anti-jam (AJ) electronics, NAVWAR Compliant Signal (NCS) receiver, and Kalman filter-based Navigator using an on-board, low-cost, micro-electromechanical Inertial Management Unit (IMU).
Designed to MIL standards, the HALO form factor incorporates a programmable Software Defined Radio (SDR) platform that provides an assured navigation solution in challenging GPS denied environments.
The mounting footprint of the HALO unit is mechanically compatible with an industry standard NATO mount along with features that allow easy and fast platform integrations.
5-element GPS L1 AJ & NCS & single element GPS L2 with adaptive frequency notching
Navigator for GPS-denied scenarios with built-in NAWAR Compliant Signal (NCS) receiver, IMU, and other sensors
Eliminates cold starts with NCS-based downstream MGUE initialization for direct M-code acquisition in spoofed environments
TRL 7 solution with 3 years of evidence from multiple assessment exercises
Compatible with most major ground-based PNT hubs available in the market
Features
- Highly integrated direct-RF Sampling Architecture using a state-of-the-art Gen 3 RFSoC that contains an UltraScale+ FPGA, multiple ADCs & DACs and multi-core ARM processor in a custom heat sunk thermally managed package
- Flexible re-programmable SDR platform capable of rapid firmware and software updates including third party IP to mitigate evolving threats
- Optimized SFAP-based AJ nulling algorithm designed to protect M-code receivers while supporting continuous operations in friendly BFEA jamming environments
- Robust NAVWAR capability with built in NCS receiver & embedded IMU along with wheel-speed sensor input, PNT fusion engine, integrity monitor and Direct-M initialization when paired with a compatible PNT hub
- Digital interface provides 6-axis IMU, 3-axis magnetometer, barometer, temperature, NCS (position, pseudo range, doppler, ephemeris, 1PPS) along with blended navigation solution
- Ruggedized & Power optimized to function in adverse conditions while running on unregulated vehicle power consuming less than 12.5W
Specifications
HALO APNT Smart Antenna |
Download Datasheet |
| Size and Weight |
Diameter: 7.5 inches (19.1 cm) Height (w/o connector): 4.1 inches (10.4 cm) Height (w/ connector): 5.0 inches (12.7 cm) Weight: 8.5 lbs. (3.9 kg) |
| Color & Finish |
Color (default): Camo Green #34094 Radome finish: Polyurethane enamel base Iridite per MIL-STD-5541 |
| Connector Interface |
PWR/CRTL/DATA port: 22 pin circular MIL-DTL-3899 receptacle RF port: TNC Female |
| Communication Protocol |
Serial: RS-422 Timing: 1PPS IN/OUT Debug: JTAG, RS-232 |
| Supported Constellations |
GPS, Iridium, mGNSS & other constellations* |
| Supported Signals |
L1 C/A, L2C, L1 & L2 P(Y), L1 & L2 M-code, Galileo E1 |
| Compatible PNT Hubs |
DAGR, Enhanced D3M, DAPS, CMOSS APNT card, NavGuide |
| GPS signal gain |
30dB |
| GPS signal group delay |
< 4 microseconds |
| L1 & E1 Jamming Susceptibility |
>100dB J/S w/ military receiver for 1-4 ground-based jammers >80dB J/S w/ military receiver for more than 4 ground-based jammers |
| GPS denied position accuracy |
Stationary: 20m CEP Ground Dynamics: 50m CEP |
| Attitude accuracy |
GPS tracking: <0.5deg GPS denied: <1.0deg |
| RF Pass-thru mode |
GPS L1, GPS L2, ALTNAV, Galileo E1 |
| Predicted Reliability |
Probability of Success: 3 years: >.9994 |
| Power Requirements |
Steady state power consumption: 12.46 watts |
| Mounting Provisions |
4-hole pattern in 4.25 inches square spacing w/ 8-32 screws NATO mount compatible |
| Performance in Adverse Weather Conditions |
The antenna will have negligible degradation in severe rain, snow, or cloudy weather conditions (Assuming antenna is not covered in ice) |
| Environmental Specifications |
Designed to MIL-STD-810H Operating Temperature: -40 deg C to +52 deg C |
| Electromagnetic Interference (EMI) |
Designed to MIL-STD-461G |
