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Direct sequence spread spectrum multichannel matched filter based on high folding rate design

A direct sequence spread spectrum and matched filter technology, applied in the field of application scenarios, can solve the problems of Doppler mismatch, large hardware resource consumption, difficult engineering implementation, etc., achieve reasonable hardware resource consumption, and avoid the problem of distance and speed ambiguity. , with the effect of engineering realization

Pending Publication Date: 2022-03-18
高原
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Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a direct-sequence spread spectrum multi-channel matched filter based on a high folding rate design, which can solve the problem of huge consumption of hardware resources of direct-sequence spread spectrum matched filter processing in traditional methods, Doppler mismatch, etc. Problems that are difficult to implement due to defects

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  • Direct sequence spread spectrum multichannel matched filter based on high folding rate design
  • Direct sequence spread spectrum multichannel matched filter based on high folding rate design
  • Direct sequence spread spectrum multichannel matched filter based on high folding rate design

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Embodiment Construction

[0060] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0061] refer to figure 1 , the present invention is composed of primary pulse compression processor-N folding matched filter (1), N folding matched filter timing output register (6), M channel multiphase digital frequency converter (9,10,11), M channel secondary pulse The compression processors (16, 17, 18) are cascaded.

[0062] Input direct-sequence spread-spectrum zero-IF signal (2, 3) through a pulse compression processor-N folded matched filter (1), obtain matched filter output (4, 5) in units of folded segments, and output through matched filter sequence Register (6), complete timing control. The timing output of the matched filter (7, 8) is mul...

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Abstract

The invention discloses a direct sequence spread spectrum multi-channel matched filter based on high folding rate design, which comprises a folding correlator and a multi-tap parallel channel matching circuit, and is characterized in that the high folding rate and multi-channel design is adopted to carry out matched filtering on direct sequence spread spectrum signals. By means of the mode, in the high-order direct sequence spread spectrum signal detection processing, hardware resource consumption is reasonable, and the dynamic capacity is high. The problem that engineering implementation is difficult due to the defects of huge hardware resource consumption, Doppler mismatch and the like of direct sequence spread spectrum matched filtering processing in a traditional mode is solved.

Description

technical field [0001] The present invention relates to the field of signal detection, in particular to detection and processing based on direct sequence spread spectrum signals, including but not limited to application scenarios such as radar signal processing and telemetry reception of spread spectrum systems. Background technique [0002] From the point of view of the signal system, the ambiguity pattern of the pseudo-code phase modulation signal based on direct sequence spread spectrum is a thumbtack type, with a single central peak and uniform side lobes, so it has high range and Doppler resolution, distance and The Doppler ambiguity is small and the sidelobe suppression is good. Compared with the traditional Doppler pulse system in radar and other signal detection systems, it can effectively solve the problem of distance and speed coupling and improve detection efficiency. [0003] But at the same time, due to the huge consumption of hardware resources and the small Do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/292G01S7/36
CPCG01S7/292G01S7/36
Inventor 高原
Owner 高原
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