KV-AJ1 Single band Anti-jamming GNSS Receiver

  • Separate units: Anti-Jamming GNSS receiver and active phase antenna array (KV-AJA1s or KV-AJA1)
  • L1-band Anti-Jam protection
  • Multiply jammers interference resistance (up to 3 directions)
  • Anti-Jam protection in dynamic multi‑jammer scenarios
  • Embedded GNSS Receiver
  • RF Up-converter for external GNSS Receiver connection
  • Exceptional Anti-Jamming performance
  • Compact enclosure system for fixed and dynamic applications
  • Anti-jam protection on land, at sea, in the air

Today anti-jamming solutions become critical for the various applications. Unmanned vehicles, automated robotic platforms, time synchronization systems, various special and military vehicles have been endangered the impossibility of receiving GNSS signals. Rapid development of jammers along with industrial noise forced to make increased demands for the interference immunity for reliable functioning. It concerns both, the design of the new products and the modernization of existing by replacing antenna to anti-jam CRPA.

The Anti-Jamming GNSS receiver, together with a phased array antenna (KV-AJA1s or KV-AJA1), implements the Null-Steering algorithm, creating dynamic nulls in the antenna gain pattern to the direction of jammers. The system provides significant jamming protection even in dynamic multi-jammer scenarios both under narrowband and broadband interferences. Anti-jamming GNSS receivers are designated for the navigation data (positioning, velocity, time) determination using GNSS signals (GPS, GLONASS, Galileo, BeiDou)1 in the L1, L2, L5, E1BC, E5a, E5b, B1, B2 bands1 under intentional and unintentional interferences.



  • UAV
  • On-ground vehicles
  • Automated robotic platforms
  • High-dynamics in severe environments
  • Railway transport
  • Critical infrastructures such as airport, port, power stations and ect.



Single jammer interference resistance up to 90 dB (J/S)
Multiply jammers interference resistance up to 82 dB (J/S)
Positioning accuracy (RMS)
Horizontal 2.1 m
Vertical 3.8 m
Data interface RS422 x 2, USB x 12, Ethernet x 12
Data protocols NMEA, NTL binary
4 RF output GPS L1 (C/A), GLONASS L1 (C/A)
Operation conditions:
Altitude 18000 m
Velocity 515 m/s
Electrical parameters
Supply voltage 12…36 V DC, 24 V typical
Power consumption
Option 1 <8 W (All data interfaces and up-converter)
Option 23 <6 W (All data interfaces without up-converter)
Option 33 <5.5 W (RS422x1 only without up-converter)
Operating -40°C to +71°C
Storage -45°C to +85°C
Weight and size
Dimensions of receiver (L х W х H) 229 mm х 167 mm x 42 mm
Weight of receiver 1500 g
Dimensions of antenna KV-AJA1 (Ø х H) 227 x 37 mm
Weight of antenna KV-AJA1 1180 g (1560 g with cables)
Dimensions of antenna KV-AJA1s (Ø х H) 140 x 24.5 mm
Weight of antenna KV-AJA1s 394 g
Protection IP67

1The basic option GPS L1(C/A), GLONASS L1(C/A). Additional variants of the GNSS constellations and frequency bands upon request.

2Hardware ready only.

3Assembly option on request.


The actual product may differ in appearance


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