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, ALTNAV receiver, and Kalman filter-based Navigator using an on-board, low-cost, micro-electromechanical Inertial Management Unit (IMU).

Designed to applicable 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 & ALTNAV AJ & single element GPS L2 with adaptive frequency notching

Navigator for GPS-denied scenarios with built-in ALTNAV receiver, IMU, and other sensors

Eliminates cold starts with ALTNAV-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 ALTNAV 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
  • Designed to ease ground vehicle Platform Integration with operability possible on a single coaxial cable*
  • Digital interface provides 6-axis IMU, 3-axis magnetometer, barometer, temperature, ALTNAV (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

*Please contact our Sales & Business team to discuss the opportunity

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
Ethernet: 1Gb/s*
USB: 2.0*
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
Probability of Success: 10 years: >.9983
Service Life: 20 years

Power Requirements

Steady state power consumption: 12.46 watts
In-Rush: < 2 amps
Input Voltage: Supports 12 – 32 VDC
Unregulated Power: Designed to MIL-STD-1275E

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

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