This module adopts a 4-element BDS single B3 anti-jamming system, which can resist suppression interference from no more than three directions. and is with B1/B3 dual-band antenna output control function.

1. Functions and indicators of the anti-interference module

This module supports Beidou-3 and adopts a 4 - element BDS single B3 anti-jamming system, which can resist suppression interference from no more than three directions. The details are as follows:

a)Complete the down-conversion and anti-jamming processing of the BDS single B3 navigation signal . After the anti-jamming processing is completed, the BDS single B3 satellite navigation signal is up-converted and output;

b)With interference state detection and output function;

c)It has a seamless connection with ordinary satellite navigation receivers and high-precision dual-frequency direction-finding receivers.

1.1 Main performance indicators

a) Working frequency and bandwidth: BDS B3: (1268.52±10.23MHz);

b)Output standing wave ratio: ≤2.0;

c)Number of antenna signal input array elements: 4;

d)Anti-interference data update rate: 1Hz;

e)Anti-interference performance index requirements

（1）Anti-jamming system: BDS/GPS anti-jamming system;

（2）Anti-interference type: continuous wave interference, broadband noise interference and multi-point sweep interference, etc.;

（3）Anti-broadband interference bandwidth: ≥20.46MHz (B3 band);

（4）Number of anti-interference sources: Simultaneously anti-interference from 1 to 3 different directions;

（5）Anti-single interference ability: (connected to Beisan receiver)

Interference signal ratio ≥ 105dB;

（6）Anti-multi-interference ability: signal-to-interference ratio ≥ 95dB;

f)Power supply and power consumption:

Working voltage: DC 5V±0.25V;

Power consumption: ≤9W;

g)Module weight: ≤130g;

h)Module size: ≤100mm×55mm×16mm;

I) Communication interface: RS422 full duplex, baud rate 115200bps, 1 start bit, 1 stop bit , 8 data bits, no parity.

J) Electrical interface: RF input and output port SMP-J type connector; power supply/serial port J30J-9ZK series;

1.2 Environmental suitability

a ) Working temperature: -50-﹢55℃;

b ) Storage temperature: -50-﹢65℃;

c ) Other environmental test conditions meet GJB 150A-2009 Requirements for "Experimental Environment Test Methods for Military Equipment". Temperature -humidity-vibration-altitude test regulations are implemented.

1.3 Interface Definition

Jamming antenna power supply and digital communication control interface: The connector model of the power supply and digital communication control interface is J30J-9ZK , and the interface definition is shown in Table 1 below:

2. Product size chart