Micro big dipper satellite navigation anti-interference array signal processing board card and anti-interference processing method thereof

Abstract

The invention discloses a micro big dipper satellite navigation anti-interference array signal processing board card and an anti-interference processing method thereof. The board card comprises an analog-to-digital conversion module, an anti-interference processing module, a digital analog conversion module, a clock distribution module and a power supply module, wherein the analog-to-digital conversion module is used for carrying out quantification processing on a received simulation intermediate frequency signal, the anti-interference processing module is used for carrying out digital bandpass filtering and digital down conversion processing on N paths of digital intermediate frequency signals outputted by the analog-to-digital conversion module to form N paths of complex base-band signals, anti-interference filtering for the N paths of complex base-band signals is carried out according to an anti-interference algorithm to acquire digital intermediate frequency signals after anti-interference processing, the digital analog conversion module is used for converting the digital intermediate frequency signals outputted by the anti-interference processing module into simulation intermediate frequency signals, and the simulation intermediate frequency signals are outputted to a front radio frequency module. The board card is advantaged in that, a system framework is simplified, system complexity is reduced, power consumption is reduced, system dimensions decrease, and cost is reduced.

Description

technical field [0001] The invention relates to a miniaturized Beidou satellite navigation anti-jamming array signal processing board and an anti-jamming processing method thereof. Background technique [0002] The Beidou system is a satellite navigation system independently designed by my country. Its functional performance is equivalent to that of the American GPS system. It has been widely used in various fields. Users can obtain accurate position, speed, time and other information through satellite navigation terminals. In the environmental or electronic countermeasures environment, interference will lead to prolonged acquisition time of satellite navigation terminals, increase the probability of false alarms, and even cause the satellite navigation terminal to lose lock and fail to work in severe cases. Therefore, anti-jamming technology has become a key technology to ensure the safe and reliable operation of satellite navigation terminals, and satellite navigation termi...

AI Technical Summary

Problems solved by technology

[0011] The technical problem solved by the present invention is to provide a miniaturized Beidou satellite navigation anti-interference array signal processing board and its anti-interference for the shortcomings of the existing system, such as large power consumption, complex system structure, low anti-interference performance and high cost The processing method simplifies the system architecture, reduces system complexity, reduces power consumption, reduces system size, and reduces cost

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