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