NTL-AJ1 Anti-jamming GNSS Receiver

  • Separate units: digital antenna array (NTL-AJA1s or NTL-AJA1) and receiver
  • Designed to replace the standard antenna
  • Сonnects to existing navigation equipment
  • Adds new anti-jamming and anti-spoofing features to the upgraded system
  • Processed RF output exclusion jamming signal

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Description

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.

Interference mitigation is achieved by applying digital null-steering algorithms to the signals, 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)* in the L1, L2, L5, E1, E5a, E5b, B1, B2 bands* under intentional and unintentional interferences.

 

TECHNICAL APPLICATIONS

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

 

TECHNICAL SPECIFICATIONS

 

GNSS GPS L1(C/A), GLONASS L1(C/A)
Single jammer interference resistance up to 90 dB (J/S)
Multiply jammers interference resistance up to 82 dB (J/S)
Positioning accuracy (RMS)
Horizontal 1.5 m
Vertical 2 m
Data interface RS422 x 2, USB x 1**, Ethernet x 1**
Data protocols NMEA, NTL binary
4 RF output GPS L1 (C/A), GLONASS L1 (C/A)
Electrical parameters
Power consumption
Option 1 6.5 W (All data interfaces and up-converter)
Option 2*** 4.5 W (All data interfaces without up-converter)
Option 3*** 4.0 W (RS422x1 only without up-converter)
Weight and size
Dimensions of receiver (L х W х H) 174 х 138.5 х 27 mm
Weight of receiver 740 g
Dimensions of antenna NTL-AJA1 (Ø х H) 227 x 37 mm
Weight of antenna NTL-AJA1 1180 g (1560 g with cables)
Dimensions of antenna NTL-AJA1s (Ø х H) 140 x 24.5 mm
Weight of antenna NTL-AJA1s 394 g
Protection IP67

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

**Hardware ready only.

***Assembly option on request.

 

Related Documents

NTL Browser 5.4.2.zipNTL Browser

 

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Single band antenna array NTL-AJA1s

NTL-AJA1s Single band antenna array for Anti-Jamming

  • 4 element antenna array
  • reduced size and weight
  • using for the simultaneous anti-jamming protection from multiple directions (up to 3)
  • protection of L1-based navigation receivers from both intentional jamming and accidental interference
  • high level of interference rejection performance
  • single enclosure system
  • ruggedized design

 

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Single band antenna array NTL-AJA1

NTL-AJA1 Single band antenna array for Anti-Jamming

  • 4 element antenna array;
  • using for the simultaneous anti-jamming protection from multiple directions (up to 3);
  • protection of L1-based navigation receivers from both intentional jamming and accidental interference;
  • high level of interference rejection performance;
  • single enclosure system;
  • ruggedized design

 

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