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Radar velocity and distance measuring method based on trapezoidal continuous waves

A technology of radar speed measurement and distance measurement method, which is applied in the direction of radio wave measurement system, radio wave reflection/reradiation, measurement device, etc., which can solve the problems of dense multi-targets that cannot accurately measure speed and distance, and achieve the effect of improving surveillance performance

Inactive Publication Date: 2018-06-05
GUANGXI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a radar speed and range measurement method based on trapezoidal continuous waves, thereby overcoming the shortcomings of radar that cannot accurately measure speed and range for dense multi-targets

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  • Radar velocity and distance measuring method based on trapezoidal continuous waves
  • Radar velocity and distance measuring method based on trapezoidal continuous waves
  • Radar velocity and distance measuring method based on trapezoidal continuous waves

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Embodiment Construction

[0029] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0030] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0031] The principle of the radar speed measurement and ranging method based on trapezoidal continuous wave is to estimate the speed information of all targets by using the point frequency band signal in the trapezoidal continuous wave by transmitting the trapezoidal continuous wave, and use this as the test criterion for whether the target pairing is correct, and then use the positive and negative The echoes of the linear ...

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Abstract

The invention discloses a radar velocity and distance measuring method based on trapezoidal continuous waves, which is used for measuring the velocity and distance of multiple targets relative to theradar. The radar velocity and distance measuring method comprises the steps that the radar transmits trapezoidal continuous wave signals, wherein the trapezoidal continuous wave comprises a positive linear frequency modulation band waveform, a point band waveform and a negative linear frequency modulation band waveform; an actual velocity value set of all targets to be measured is determined afterradar echo demodulation; a possible velocity value of each target to be measured is determined; and the possible velocity value of each target to be measured is matched with the actual velocity valueset of all targets to be measured to obtain the actual velocity of each target to be measured, and the actual distance of each target to be measured is further obtained. The radar velocity and distance measuring method based on the trapezoidal continuous waves can effectively realize velocity and distance measurement of the radar for dense multiple targets, and thus the monitoring performance ofthe radar for dense multiple targets is greatly improved.

Description

technical field [0001] The invention relates to the field of radar detection, in particular to a radar speed measurement and distance measurement method based on trapezoidal continuous waves. Background technique [0002] Continuous wave radar has outstanding advantages such as low cost and light weight, and has important application value in the civilian field with short range. At present, continuous wave radar transmission waveforms mainly include point frequency signals, sawtooth wave signals and triangular wave signals. Among them, the point frequency signal is mainly used to measure the speed of the target, the sawtooth wave signal is used to measure the distance of the target, and the triangular wave signal can be used to measure the speed and distance of the target at the same time. [0003] The triangular wave signal needs to correctly match the different positions of the same target in the positive and negative FM slope signal, in order to obtain the correct speed ...

Claims

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Application Information

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IPC IPC(8): G01S13/42G01S13/58
CPCG01S13/42G01S13/584
Inventor 文珺王伟伟许京伟
Owner GUANGXI UNIV
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