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KV-AJx Multi band Anti-Jamming GNSS Receiver

  • AJ1, AJ2, AJ3 options are available:
    • AJ1 – single-frequency band
    • AJ2 – dual-frequency band
    • AJ3 – tri-frequency band
  • Multi-band anti-jamming GNSS receiver: up to 3 frequency bands simultaneously
  • Multi-system solution: GPS/ Galileo/ NavIC (IRNSS) / GLONASS could be used (please see specified options)
  • Up to 100 dB J/S performance
  • Small size: 137 х 111 x 23 mm
  • Low power consumption: 5…12.8 W (in dependence of options)
  • Support up to 3 jammers simultaneously for each of frequency bands
  • Receiver based by own NTLab`s high-performance ASICs: RFFE, baseband, anti-jamming processors
  • Up-converter RF output for external GNSS receivers
  • Internal receiver with INS, RAW data and unlocked velocity, acceleration etc. by request

 

The purpose of using the KV-AJx GNSS receiver is to ensure stable reception of the navigation signal in conditions of staged interference. The receiver must be used with KV-AJAx phased antenna array (please see the antenna array description page). Small-size case dimensions allow to implement high-performance systems in space-effective solutions

Coupled with the use of a multi-band 4-element antenna array (module could be provided by Kosminis Vytis), tri-band solution allows to suppress interferences in up to 3 directions on three frequency plans simultaneously. This approach provides significantly higher protection against interference compared to single-frequency options. KV-AJx-A contains MEMS inertial sensor and thus allows the creation the GNSS-aided INS (GNSS+INS) solutions for Position, Velocity, Time and Attitude. The jamming-free cleared RF signal can also be delivered to external non-protected GNSS receivers to obtain position, velocity and time.

Parameter Description Note
Supported GNSS constellations Option 1:

GPS L1(C/A),L5; NavIC L5,S;

Galileo E1; SBAS L1

Option 2:

GPS L1(C/A), L2(CM), L5;

GLONASS L1(C/A), L2(C/A);

Galileo E1B, E1C, E5b; NavIC L5

Option 3:

GPS L1(C/A),L2(CM); Beidou B1; Galileo E1;SBAS L1

Option 4:

GPS L1, L2 (C/A, M-code);

Galileo E1

 

Simultaneous GNSS signal reception

 

Option 1 by default.

All other constellations available by request

 

C/A, CM codes: PVT digital out and interference-clear RF out

 

M-code: – RF output only, hardware ready (not tested).

 

Interference rejection:
Single jammer interference resistance Up to 40* dB Single jammer:

– one CW signal centered at the 1575,42 МНz;

– one CW signal centered at the 1227,6 МНz;

Up to 30* dB Single jammer:

– one AWGN signal centered at the 1575,42 МНz and 40 MHz bandwidth;

– one AWGN signal centered at the 1227,6 МНz and 30 MHz bandwidth;

Several interference suppression (up to three) Up to 32* dB Each of jammer:

– one CW signal centered at the 1575,42 МНz;

– one CW signal centered at the 1227,6 МНz;

Up to 23* dB Each of jammer:

– one AWGN signal centered at the 1575,42 МНz and 40 MHz bandwidth;

– one AWGN signal centered at the 1227,6 МНz and 30 MHz bandwidth;

Interference resistance:
Single jammer interference resistance Up to 90 dB (J/S)
Several jammers interference resistance (up to three) Up to 82 dB (J/S)
Number of receiver channels 4  for each frequency band
Positioning accuracy (RMS):
-horizontal 2.1 m
-vertical 3.8 m
Data interfaces 3xRS422
Peripheral interfaces 1x1PPS out
Up-converter RF output (optional*) 1 pcs Clear GNSS signal. L1 band by default. Other bands by request.
GNSS+INS coupling (optional available by request*) with onboard MEMS sensor With external IMU via RS422 (optional available by request*)
Data protocols NMEA, NTL Binary
Data update rate:
Standalone mode 20 Hz PVT data
Raw ranging measurements 20 Hz
GNSS+INS mode 200 Hz PVT data
Operation conditions:
Altitude 18000 m up to 50000 m by request
Velocity 512 m/s up to 3000 m/s by request
Supply voltage 12V…36V, 24V typical
Power consumption <15.0W (typical) max <19W (with three bands up-converter)
Dimensions 136.6 mm х 110.8 mm x 22 mm
Weight 540 g
Operating temperature – 40°C …+ 71°C
Connectors Antenna RF IN+DC out:

4xMCX (Band 1, Band 2)

4xMCX (Band 3)

RF OUT:

1xMCX (Band 1, Band 2, Band 3)

Power and Data IN/OUT:

1×580-M25-203L001

1×580-M15-203L001

 

Depends of frequency options

 

* – TBC

The actual product may differ in appearance

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