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Radar target tracking method and device

A radar target tracking and variance technology, applied in measurement devices, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problems of target detection and tracking effects, target tracking loss, etc. The effect of tracking accuracy

Pending Publication Date: 2021-02-26
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

[0004] In practical applications, for a complex target, the scattering centers are usually randomly distributed on the target surface. Since the echo received by the radar is the vector superposition of the echoes of each scattering point, there is an inevitable interference effect between the scattering points. Detection and tracking are affected, and in severe cases, target tracking may be lost

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  • Radar target tracking method and device
  • Radar target tracking method and device
  • Radar target tracking method and device

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043]At present, tracking radars mainly work in the microwave frequency band. When the operating frequency of the radar is increased to the millimeter wave frequency band, the bandwidth of the signal is also significantly increased, which improves the range resolution of the radar. For complex targets containing multiple scatter points, broadband radar can separate the scatter points whose distance difference exceeds...

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Abstract

The invention provides a radar target tracking method. The radar target tracking method comprises the following steps of: receiving an original echo signal obtained by target scattering of a broadbandsignal by using a plurality of channels; performing digital processing on the original echo signals of the plurality of channels to synthesize a sum signal, and synthesizing the sum signal into a high-resolution range profile; carrying out incoherent accumulation on the high-resolution range profile in a slow time direction to obtain a range power profile; performing first threshold judgment on the distance power image, and screening a first distance unit set; calculating a normalized amplitude variance according to the first distance unit set, performing second threshold judgment on the normalized amplitude variance, and screening a stable scattering point distance unit set; and determining a target center position according to the stable scattering point distance unit set, and performing target tracking. The invention further provides a radar target tracking device, the scattering points are classified on the basis of the normalized amplitude variance of the sum signal, the stable scattering points are screened out, and the target tracking precision is improved.

Description

technical field [0001] The invention relates to the technical field of radar target tracking, in particular to a radar target tracking method and device. Background technique [0002] In radar technology, the range resolution of radar detection is inversely proportional to the bandwidth. Increasing the bandwidth of the transmitted signal can improve the range resolution and obtain more information about the target. In modern radar systems, broadband signals are often used to improve the detection performance of the radar. [0003] Tracking radar is a mature target tracking method, which is widely used in the field of target tracking. The classic tracking radar system adopts monopulse technology, and uses a special transceiver antenna to form a sum signal and a difference signal, and uses the sum signal to realize target detection, and the difference signal reflects the angle information of the target. [0004] In practical applications, for a complex target, the scattering...

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Application Information

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IPC IPC(8): G01S13/72G01S13/89
CPCG01S13/72G01S13/89
Inventor 李超李宏伟吴世有郑深方广有
Owner AEROSPACE INFORMATION RES INST CAS
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