Acquisition system for improving processing gain of weak gnss signals
A signal processing and weak technology, applied in the field of navigation communication, can solve the problems of limited processing gain, limited integration time, etc., to achieve the effect of solving limited processing gain, increasing processing gain, and achieving simplicity
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[0017] The invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] refer to figure 1 , figure 2 . In the embodiment described below, the acquisition system for improving the processing gain of weak GNSS signals includes: a local pseudocode generator 1, a radio frequency processing unit 2, a tapped delay line module 3, a multiplier 4, a coherent integration module 5, a non-coherent integration module module 6 , parallel correlation unit 7 , extended integration unit 8 , peak judgment module 9 and correlation operation unit 10 . Wherein the correlation operation unit 10 comprises a coherent integration module 5 and a non-coherent integration module 6 connected in series between the output terminal of the multiplier 4 and the extension integration unit 8; the extension integration unit 8 consists of figure 2 The shown data storage module 11 is composed of a series combination adding module 12 and is connected in serie...
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