A Height Inversion Method for Space-Space High-Temperature Targets Based on Space-Based Multispectral Data

Abstract

The invention discloses a space-based high-temperature target height inversion method based on space-based multi-spectral data. The steps of the method are as follows: (1) a single-satellite multi-spectral camera detects the high-temperature target in the field of view with a high time resolution Continuously image and collect data; (2) preprocess the data and extract the target signal strength; (3) obtain the target skin temperature at the corresponding time based on the quantitative relationship between the target temperature and signal strength; (4) obtain the target skin temperature based on the high-speed flow The law of convective heat transfer establishes the quantitative relationship between the target skin temperature and atmospheric temperature and time, and obtains the atmospheric temperature at the current target altitude; (5) based on the corresponding relationship between atmospheric temperature and vertical altitude, inverts the current target altitude. The space-sky high-temperature target height inversion method provided by the present invention gets rid of the need for double-star positioning, is easy to operate, highly implementable, and has high timeliness, obtains multi-spectral data, and improves the accuracy of target positioning.

Description

technical field [0001] The invention belongs to the field of target detection, and in particular relates to a space-based high-temperature target height inversion method based on space-based multi-spectrum data. Background technique [0002] With the continuous development of space detection and modern defense systems, the detection and identification of high-temperature space targets represented by hypersonic vehicles has become a research hotspot in the field of space detection. The flying speed of this kind of target is extremely fast, can reach Mach 5 or more, and its maneuverability is strong, which greatly increases the difficulty of its detection and identification. [0003] When the aircraft flies at high speed, the surrounding atmosphere is compressed violently, and a large amount of kinetic energy is converted into internal energy, which makes the air temperature on the surface of the aircraft and near it rise rapidly. Therefore, space-based infrared systems are ge...

AI Technical Summary

Problems solved by technology

For the acquisition of altitude information of aerospace flight targets, the method of double-star (or multi-satellite) coverage detection is generally used for positioning. However, due to its close space, the current space-based infrared detection system cannot perform double-star positioning.

On the whole, traditional detection has very limited ability to obtain the temperature and altitude of space high-temperature targets, and it is difficult to meet the follow-up needs of target tracking, identification and interception strikes

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