Multi-target parameter measurement method suitable for continuous wave perimeter monitoring radar

A monitoring radar and parameter measurement technology, applied in the field of signal processing, can solve problems such as distance-velocity coupling, and achieve the effects of small accidental errors, strong project realization value, and improved efficiency and information utilization.

Active Publication Date: 2018-03-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method to solve the range-velocity coupling problem caused by beat operation; to solve the spectrum correction of "range-Doppler" domain (RD domain) data, so as to realize high-precision Distance measurement and speed measurement; accurate target pairing in multi-target situations

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  • Multi-target parameter measurement method suitable for continuous wave perimeter monitoring radar
  • Multi-target parameter measurement method suitable for continuous wave perimeter monitoring radar
  • Multi-target parameter measurement method suitable for continuous wave perimeter monitoring radar

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Embodiment Construction

[0069] The structure and flow process of the present invention are respectively as Figure 4 , Figure 5 As shown, the specific implementation steps are as follows:

[0070] a. Before starting the parameter measurement, the original echo data of the continuous wave radar needs to be beat, fast time domain FFT, clutter suppression, slow time domain coherent accumulation, linear detection, constant false alarm detection, spectral peak search and other operations.

[0071] b. Obtain the range-Doppler domain (RD domain) data (collectively referred to as RD_data) and the result of target detection (collectively referred to as TarInfo) corresponding to the upper and lower frequency sweeps respectively, wherein the result of target detection is the index in RD_data, Through this index, the distance, fuzzy speed and power information of each detection point can be found or calculated.

[0072] Note that M detection points (i=1,2,...,M) are obtained by frequency sweeping up, and N de...

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Abstract

The invention discloses a multi-target parameter measurement method suitable for a continuous wave perimeter monitoring radar, belongs to a signal processing technology, and specifically relates to amethod for spectrum correction, multi-target pairing and parameter measurement of a continuous wave radar. A method is provided which solves the problem of distance and speed coupling brought by beatoperation, solves the problem of spectrum correction of ''Range-Doppler'' domain (RD domain) data, so as to realize high-precision distance measurement and speed measurement, and can accurately perform target pairing in a multi-target situation. Aiming at a continuous wave perimeter monitoring radar, an efficiency multi-target distance and speed measurement algorithm with high precision is provided; in the aspect of spectrum zooming, the limitation that traditional spectrum zooming or correction operation is only performed on a one-dimensional distance spectrum is broken through, improvement of speed measurement precision does not just rely on increase of the FFT point number or distance spectrum zooming, but takes full advantage of a result of MTD at the same time, and thus the efficiencyof the algorithm and the utilization rate of information are improved.

Description

technical field [0001] The invention belongs to the signal processing technology, and in particular relates to spectrum correction, multi-target matching and parameter measurement methods of continuous wave radar. Background technique [0002] There is an increasing demand for security in important areas such as airports, borders, seaports, and military bases. Traditional perimeter security often uses methods such as infrared detection, microwave sensing, vibration sensing optical cables, pulse electronic fences, and video surveillance, but they all have many problems. Due to its unique advantages, radar technology has gradually been developed and applied in the field of security. [0003] Common working systems of perimeter surveillance radar include pulse Doppler system and continuous wave system. For the pulse Doppler radar system: high transmitter peak power is required during design, and the system structure is complex and bulky, which is not suitable for civilian fie...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/58G01S7/41
CPCG01S7/415G01S7/418G01S13/584
Inventor 于雪莲刘任申威李海翔周云
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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