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Low-power-consumption small satellite radar searching and tracking method for space target

A space target, radar search technology, applied in instruments, measurement devices, and re-radiation, etc., can solve the problems of limited radar detection ability, and achieve the effect of low power consumption, small size, and high power consumption

Pending Publication Date: 2021-12-17
SPACE STAR TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

Although space-based radar detection has been studied for decades, current radar detection capabilities are limited

Method used

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  • Low-power-consumption small satellite radar searching and tracking method for space target
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  • Low-power-consumption small satellite radar searching and tracking method for space target

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Embodiment Construction

[0050] The method for searching and tracking space target low-power small satellite radar of the present invention selects a radar band that satisfies the performance of searching and tracking at the same time, and then analyzes the performance of radar searching and tracking. Including the following steps:

[0051] 1) Radar band selection

[0052] According to the radar equation in the search mode, the search performance depends on the power-aperture product of the radar; according to the radar equation in the target tracking mode, the tracking performance depends on the power-aperture gain product of the radar. Considering factors such as large-scale search, fine target tracking, system complexity and cost, etc., the C-band is selected as the working band of the miniaturized phased array radar for micro-nano satellites.

[0053] 2) Transmit signal mode

[0054] In order to minimize the detection blind area and reduce the mutual interference between signals, the time-freque...

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Abstract

The invention provides a low-power-consumption small satellite radar searching and tracking method for a space target. A C wave band is selected as a radar working frequency band. The phased array radar is used for firstly searching an airspace target, distance information of the target is obtained through distance compression, short-time Fourier transform and constant false alarm rate detection, and then angle measurement is carried out on the target by using sum and difference beams. And when the distance and angle information of the target is obtained, the target is tracked. Based on the design of the miniaturized phased array radar system, a signal processing method for target searching and tracking, and distance measurement and angle measurement error analysis, it is obtained that the miniaturized phased array radar can search a 40-degree * 40-degree three-dimensional space target within the range of 25 km, the distance measurement precision of 0.4 m and the angle measurement precision of 0.03 degree are achieved, and therefore, the large-range searching and tracking application requirements of the space target are met.

Description

technical field [0001] The invention belongs to the technical field of radar in the electronic information industry, and relates to a space target low-power small satellite radar search and tracking method. Background technique [0002] With the development of aerospace technology, more and more space debris such as space debris and failed spacecraft pose a threat to the space security of high-value satellites. To this end, it is necessary to detect space objects. At present, there are basically two ways to detect space targets: ground-based detection and space-based detection. Since most of my country's ground-based detection stations are distributed in the country, the detection points are limited, and the detection airspace is limited, so it is impossible to realize the detection of space debris in the whole airspace and all day long. The space-based observation is not limited by the airspace, and can realize the detection and tracking of space targets in the entire air...

Claims

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Application Information

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IPC IPC(8): G01S13/58
CPCG01S13/58
Inventor 郭宇华夏正欢赵志龙张涛刘敦歌杨钰茜刘新
Owner SPACE STAR TECH CO LTD
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