In-orbit moving target detecting method with space-based radar and infrared data fusion

Abstract

The invention discloses an in-orbit moving target detecting method with space-based radar and infrared data fusion. The method includes the steps that when an infrared detecting system is used for detection, background suppression is carried out on each frame in an infrared image sequence by adopting a filtering method based on the morphology, self-adaptive threshold segmentation is carried out on images obtained after background suppression, a single frame detection result is extracted, a multi-frame target is determined through a tracking algorithm, and whether the detection result is a real target or not is judged to obtain the detection result of the multi-frame target; during radar detection, pulse doppler (PD) is adopted for processing. After time calibration and space calibration are carried out on the obtained infrared and radar target information, data fusion is carried out on the information by adopting a measurement fusion method, and track prediction is carried out on fused data to obtain the estimated position of the target.

Description

【Technical field】 [0001] The invention belongs to the field of aerospace remote sensing, and relates to a method for detecting a moving target on orbit by fusion of space-based radar and infrared data. 【Background technique】 [0002] Space-based moving target detection and recognition is a complex and arduous task, the detection path is usually greater than the thickness of the atmosphere, the detection distance is extremely long and the environment is complex and changeable. [0003] For infrared detection, the detection platform is generally hundreds to thousands of kilometers above sea level, while the target aircraft is generally in the troposphere and stratosphere, and its height range is generally within 1km to 20km, and the detection path passes through the altitude range where the clouds are located. Therefore, the background of the infrared image presents a non-stationary spatial distribution, such as bright ground background or sea background, undulating cloud back...

AI Technical Summary

Problems solved by technology

Although some existing space-based detection systems are equipped with radar and infrared detection systems at the same time, the two have not coordinated to complete the detection task, and have not carried out information fusion

However, the existing radar and infrared data fusion technology is generally applied to detection equipment fixed on the ground or airborne detection equipment, and is not suitable for moving target detection on satellites.

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