Satellite Navigation Anti-jamming Steering Vector Automatic Correction System

A technology of guiding vector and satellite navigation, which is applied in the direction of satellite radio beacon positioning system, radio wave measurement system, measuring device, etc. It can solve the problems of unsuitable satellite navigation signal and inability to calibrate the guiding vector, and achieve high correction accuracy and correct Effects of improved efficiency and high estimation accuracy
CN109507698BActive Publication Date: 2022-07-0810TH RES INST OF CETC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
10TH RES INST OF CETC
Publication Date
2022-07-08

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Abstract

The invention discloses a satellite navigation anti-jamming steering vector automatic correction system. Using the invention, the on-site automatic correction of the steering vector can be realized without setting an external calibration source. The invention is realized by the following technical scheme: The module down-converts the received N-channel array antenna RF signals into N-channel intermediate frequency digital signal column vectors, and divides them into two channels, one is sent to the DBF processing module for weighting processing, and the other is sent to the steering vector correction processing module. When the steering vector correction processing module sends a correction control command to the satellite navigation digital receiver and the DBF processing module, the satellite navigation digital receiver and the DBF processing module cooperate with the steering vector correction processing module to perform steering vector correction processing, and the reconstructed kth satellite The satellite's local reference signal and N channels of intermediate frequency digital signals are subjected to correlation despreading processing, and the array steering vector error complex vector in the direction of the kth satellite is calculated and the target steering vector is corrected.
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Description

technical field

[0001] The invention relates to the field of satellite navigation anti-jamming signal processing, in particular to a satellite navigation anti-jamming steering vector automatic correction system. Background technique

[0002] In the Global Navigation Satellite System (GNSS), the navigation signal reaching the ground is extremely weak. For example, the minimum guaranteed level of the navigation signal transmitted by the Beidou satellite to the output end of the receiver antenna is -163dBW. Due to the weakness of the navigation signal, the electromagnetic signal received by the receiver is very easy to encounter various active or passive interference in the process of its propagation, resulting in the decrease of the receiver sensitivity or even the inability to locate, which seriously affects the performance of the navigation system. Therefore, satellite navigation Anti-jamming technology has received extensive attention.

[0003] At present, in addition to u...

Claims

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