Broadband microwave signal acquisition method and system

Abstract

The invention discloses a broadband microwave signal capture method, comprising: collecting one point at intervals of N points for K data, collecting M times to generate N extracted signals, performing serial-to-parallel conversion on the N extracted signals, and generating a signal sequence S 1 …S N ;Generate the quadrature carrier signal extracted locally, S 1 Multiply with the orthogonal carrier signal to generate the first down-converted signal; generate a locally extracted code signal, and perform correlation operations on the first down-converted signal and the code signal to obtain the sequence S 1 The calculation result sequence R 1 ; For N extracted signals except S 1 The rest of the extracted signals are combined with S 1 The same calculation, get R 2 …R N ; to R 1 , R 2 …R N The interleaved parallel-serial conversion generates a serial sequence P, and the maximum value in the serial sequence P is judged, the code phase corresponding to the maximum value is the captured code phase, and the frequency corresponding to the maximum value is the captured carrier frequency. The technical scheme of the present invention extracts and divides high-speed data into blocks, performs parallel processing on signals in blocks, and realizes capturing and receiving of broadband signals.

Description

technical field [0001] The invention relates to the field of microwave signal capture, in particular to a broadband microwave signal capture method and system. Background technique [0002] The bandwidth of the signal used by the traditional two-way time synchronization system is up to 40MHz. The signal can be received by using the traditional pseudo-code capture method, and the existing hardware processing capability can also meet the processing requirements. For the new broadband microwave two-way time comparison signal, the bandwidth reaches 200MHz or even larger, and the system sampling rate must reach 500MHz or more, which far exceeds the current mainstream hardware's large data volume and complex real-time signal processing capabilities. The current mainstream spread spectrum fast capture method They are all aimed at narrow-band spread-spectrum signals below 50MHz, but no effective capture method has been found for wide-band spread-spectrum signals. [0003] In view o...

AI Technical Summary

Problems solved by technology

For the new broadband microwave two-way time comparison signal, the bandwidth reaches 200MHz or even larger, and the system sampling rate must reach 500MHz or more, which far exceeds the current mainstream hardware's large data volume and complex real-time signal processing capabilities. The current mainstream spread spectrum fast capture method They are all aimed at narrowband spread spectrum signals below 50MHz, but no effective capture method has been found for wideband spread spectrum signals

[0003] In view of this, the object of the present invention is to provide a broadband microwave signal capture method and system to solve the problem of broadband microwave signal capture

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