Radar image-based flyer target identifying and tracking method

A target recognition and radar image technology, applied in the field of image processing, can solve the problems of bird target recognition and tracking without systematic mature methods and practices, and achieve the effect of reducing false alarm rate, broad application prospects, and meeting real-time requirements.

Inactive Publication Date: 2010-04-21
BEIHANG UNIV +1
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Problems solved by technology

The airport radar bird detection system is an effective technical means to prevent bird strikes, but there is no

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  • Radar image-based flyer target identifying and tracking method
  • Radar image-based flyer target identifying and tracking method
  • Radar image-based flyer target identifying and tracking method

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[0029] The following describes in detail the radar image-based bird target recognition and tracking method provided by the present invention with reference to the drawings and embodiments.

[0030] The bird target recognition and tracking method provided by the present invention is implemented through the following steps:

[0031] Step 1: Background difference.

[0032] The background difference refers to subtracting a background image from a bird radar PPI image, and the background image is constructed by an average value method or a principal component analysis method.

[0033] The average method is the most commonly used and simplest background construction method. This method is usually adapted to the situation where the target residence time in the scene is short and the target appears infrequently. For each frame of image to reconstruct the background, the calculation formula is as follows:

[0034] B k = 1 N ( f k + f k - 1 + . . . ...

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Abstract

The invention relates to a radar image-based flyer target identifying and tracking method, which comprises the following steps: subtracting a background image from an avian detection radar PPI image to obtain a background differential radar image; performing clutter suppression on the background differential radar image; performing target information extraction and multi-target tracking; and realizing the target identifying and tracking by data fusion. The method provided by the invention fills the blank of the field of radar avian detections in China, provides technical support for flyer strike prevention work of civil aviation, is suitable for processing other radar target signals under the situation of low altitude and low speed, has wide application prospect, and can be used for guiding airport staff to implement a flyer expelling operation.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to a radar image-based bird target recognition and tracking method, which is mainly applied to the back-end processing of radar images in an airport radar bird detection system. Background technique [0002] Bird strikes refer to incidents in which an aircraft collides with flying objects such as birds and bats during take-off and landing or flight. Bird strikes have occurred since the advent of aircraft. According to statistics, the annual military and civil aviation losses caused by bird strikes in North America alone exceed 500 million U.S. dollars and endanger the lives of passengers. There are an average of 5.7 bird strikes per 10,000 aircraft takeoffs and landings in Europe. hit. From 2001 to 2007, Civil Aviation of China reported 1,055 bird strikes, resulting in 215 accidents and 217 moderate-level injuries. The direct losses in maintenance statistics exceeded 270 mil...

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Application Information

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IPC IPC(8): G01S7/41G01S13/58G01S13/66
Inventor 宁焕生陈唯实朱衍波郭勇刘文明徐群玉
Owner BEIHANG UNIV
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