Method and device for selecting radar monitoring points and method and device for processing echo signals

A technology of echo signals and monitoring points, applied in the field of radar monitoring point selection, to achieve the effect of ensuring measurement accuracy, high and stable scattering intensity, and ensuring measurement accuracy

Active Publication Date: 2018-11-27
长沙深之瞳信息科技有限公司
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Problems solved by technology

[0005] Aiming at the problem of selecting monitoring points in deformation monitoring of large buildings, the present invention proposes a method and device for selecting radar monitoring points and an echo signal processing method and device

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  • Method and device for selecting radar monitoring points and method and device for processing echo signals
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  • Method and device for selecting radar monitoring points and method and device for processing echo signals

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with accompanying drawing.

[0040] 1. Radar monitoring point selection method

[0041] Such as figure 1 As shown, the radar monitoring point selection method of the present invention comprises the following steps:

[0042] (1) Transmit radar signals and collect echo signals

[0043] Establish a radar deformation monitoring system, set m monitoring points on the observed target, use continuous waves as radar transmission signals, and continuously collect echo signals reflected by each monitoring point, and perform A / D conversion to obtain digital signals;

[0044] (2) Mixing

[0045] After the A / D conversion, the radar transmission signal and the echo signal are mixed to obtain the intermediate frequency signal.

[0046] (3) Pulse compression processing of echo signal and representation of complex signal

[0047] In pulse compression, the radar transmitter transmits a pulse with a larger bandwidth...

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Abstract

The present invention provides a radar monitoring point selection method and device. The method comprises: performing continuous sampling of echo signals, and obtaining intermediate frequency signals through frequency mixing; performing the Fourier transform and the pulse compression processing of the intermediate frequency signals, and converting the intermediate frequency signals to a plural form; drawing discrete spots and performing circle fitting in the polar coordinate system; calculating the fitting error and the pulse pressure amplitude, calculating a fusion value according to the fitting error and the pulse pressure amplitude, and selecting monitoring points according to the fusion value and the fitting error. The present invention further provides an echo signal processing method and device, and the monitoring points are selected according to the fusion value, the fitting error and the pulse pressure amplitude. According to the invention, the monitoring points of the echo signals with high signal to clutter ratio, high scattering intensity and stable phase can be screened so as to satisfy the requirement of the deformation measurement, remove the static noise wave and improve the accuracy of the large-scale building deformation measurement.

Description

technical field [0001] The invention relates to a method for selecting radar monitoring points, in particular to a method for selecting radar monitoring points in deformation measurement of large buildings. Background technique [0002] In recent years, because the radar system has the advantages of high measurement accuracy, wide monitoring area, contact or non-contact measurement, all-weather work, and convenient use, the use of radar technology to achieve continuous and accurate monitoring of target objects has been widely used. [0003] The selection of radar monitoring points plays a vital role in radar ranging. For different monitoring points, the quality of the echo signal is different, and the signal-to-clutter ratio is different. For the deformation monitoring of large buildings, due to the detection of small deformations, the quality requirements of the echo signals are relatively high, which puts forward higher requirements for the selection of monitoring points....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41G01S13/88
CPCG01S7/41G01S13/88
Inventor 王雅敏
Owner 长沙深之瞳信息科技有限公司
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