An Airborne Millimeter Wave Radar Power Line Detection Method

A millimeter wave radar and detection method technology, applied in the field of radar, can solve the problem of high detection false rate, and achieve the effect of improving the recognition rate and reducing the target false alarm rate

Active Publication Date: 2021-04-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Therefore, the technical solution of the present invention is an airborne millimeter-wave radar power line detection method, which improves the problem that the false rate of power line detection in the prior art is too high under the condition of low signal-to-clutter ratio, and improves the detection probability of power lines

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  • An Airborne Millimeter Wave Radar Power Line Detection Method
  • An Airborne Millimeter Wave Radar Power Line Detection Method
  • An Airborne Millimeter Wave Radar Power Line Detection Method

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[0030] Step 1: The range sidelobe of pulse compression processing has a great influence on the weak target detection performance of the system. This is because the difference in distance products of scatterers in different distance cells is larger than that of scatterers in the same range cell. The main factor affecting the performance of pulse compression processing is the frequency domain amplitude weighting of the matched filter. Different frequency domain amplitude weightings can be used to obtain different main lobe widths and distance side lobe levels of the pulse pressure output. Commonly used amplitude weightings include Hamming weighting and Taylor weighting. The maximum range sidelobe level of Hamming weighted is -42.6dB, the main lobe widening coefficient of the compressed pulse is 1.47, and the signal-to-noise ratio loss is 1.34. Compared with Hamming weighting, Taylor weighting has lower SNR loss under the same distance sidelobe. For example, when the maximum s...

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Abstract

The invention discloses an airborne millimeter-wave radar power line detection method, belongs to the field of radar technology, and specifically relates to the technology of anti-collision radar. In the case of low signal-to-clutter ratio, since the ground clutter signal is relatively strong, the present invention uses the power line frame to locate the signal gate, uses the position information of the power line frame to determine the approximate direction of the power line, establishes a possible track model, and then uses Kalman filtering extracts suspicious power lines, and then extracts feature vector values, and uses support vector machines to classify them. Therefore, the technical solution of the present invention is an airborne millimeter-wave radar power line detection method, which improves the problem of high false rate of power line detection in the prior art under the condition of low signal-to-clutter ratio, and improves the detection probability of power lines.

Description

technical field [0001] The invention belongs to the technical field of radar, in particular to the technology of anti-collision radar. Background technique [0002] The wavelength of the millimeter-wave radar is between the microwave band and the infrared. Compared with the microwave band radar, it has many advantages: 1). In the case of the same radar antenna size, the millimeter-wave radar antenna is higher than the microwave band radar antenna. angular resolution. 2). The wavelength of the millimeter-wave radar is very small, which makes the size of the antenna and circuit components small, so that the entire millimeter-wave radar system has light weight and small volume. 3). Millimeter waves have a larger bandwidth than microwaves and can obtain higher distance resolution. 4). The wavelength of the millimeter wave is very close to the size of the electric force line, and the backscattering section of the electric force line under the irradiation of the millimeter wave ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/292G01S7/41
Inventor 江朝抒杨嘉欣邹超
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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