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Broadband microwave signal capturing method and system

A microwave signal and signal capture technology, applied in the transmission system, electrical components, etc., can solve the problem of broadband spread spectrum signal without finding the capture method, and achieve the effect of reducing the cost of hardware reception

Active Publication Date: 2020-03-31
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment 1

[0015] figure 1 It is a schematic flow chart of a broadband microwave signal acquisition method in the first embodiment of the present invention, such as figure 1 As shown, the method includes the following four steps.

[0016] Step S101: Generate N extraction signals for K data. Specifically, the number of data used for signal capture of broadband microwave signals each time is K, and one point is collected at intervals of N points for K data, and N extraction signals are generated by collecting M times, and each data block contains M Data, N, M, K satisfy K=N*M, perform serial-to-parallel conversion on N extracted signals, and generate signal sequence S 1 …S N .

[0017] Step S102: Generate a down-converted signal. Specifically, according to the first extracted signal S in the N extracted signals 1 The phase of the quadrature carrier signal generated locally, S 1 Multiplied with the quadrature carrier signal to generate the first down-converted signal. For N extracte...

Embodiment 2

[0021] The embodiment of the present invention provides a broadband microwave signal capture system, which is mainly used to implement the broadband microwave signal capture method provided in the above-mentioned content of the embodiment of the present invention. The broadband microwave signal capture system provided by the embodiment of the present invention will be specifically introduced below .

[0022] figure 2 It is a schematic structural diagram of a broadband microwave signal acquisition system according to the second embodiment of the present invention. Such as figure 2 As shown, a broadband microwave signal acquisition system includes an extraction module 10 , a serial-to-parallel conversion module 20 , a control unit 30 , a parallel-to-serial conversion module 40 and a capture result judgment module 50 .

[0023] Extraction module 10, the number of data used for signal capture of broadband microwave signals is K each time, one point is collected for K data at i...

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Abstract

The invention discloses a broadband microwave signal capturing method. The method comprises: acquiring one point for every N points of K data, acquiring M times to generate N extraction signals, and performing serial-parallel conversion on the N extraction signals to generate signal sequences S1... SN; generating a locally extracted orthogonal carrier signal, and multiplying S1 by the orthogonal carrier signal to generate a first down-conversion signal; generating a locally extracted code signal, and performing correlation operation on the first down-conversion signal and the code signal to obtain a calculation result sequence R1 of the sequence S1; calculating the rest of the N extraction signals except the S1 in the same way as the S1 to obtain R2... RN; and interleaving and converting the R1, R2... RN in parallel to generate a serial sequence P, and judging the maximum value in the serial sequence P, wherein 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. According to the technical scheme, high-speed data are extracted and blocked, blocking parallel processing iscarried out on signals, and capturing and receiving of broadband signals are achieved.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/06H04B1/7075
CPCH04B1/06H04B1/7075
Inventor 王海峰张升康王学运王宏博易航王艺陶
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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