Near-space dark and weak target orienting device based on color infrared spectrum common-aperture imaging

Abstract

The invention discloses a near-space dark and weak target orienting device based on color infrared spectrum common-aperture imaging. The near-space dark and weak target orienting device comprises a color infrared common-aperture imaging sensor, a two-dimensional servo orienting mechanism, a comprehensive control unit, a secondary power supply and the like. According to the invention, a multispectral detection scheme based on a color infrared common aperture optical system is adopted, the advantages of visible light detection and infrared detection schemes are integrated, an image compression spatial domain filtering and high-speed signal processing technology is adopted, and based on a single-frame multispectral image data fusion processing algorithm and a multi-frame sequence moving target filtering matching algorithm, all-time tracking of a dark and weak target in a near space is achieved.

Description

technical field [0001] The invention relates to an orienting device for faint targets in adjacent spaces based on color infrared spectrum common-aperture imaging, and belongs to the field of target recognition equipment in adjacent spaces. Background technique [0002] Near space generally refers to the area between 20km and 100km from the ground, which is the area between the highest flying altitude of the aircraft and the lowest flying altitude of the space orbiter, and is the transition area from the aviation airspace to the aerospace airspace. From bottom to top, the adjacent space includes the stratosphere region, the middle atmosphere region and part of the ionosphere region. This region has the characteristics of thin atmosphere and weak meteorological activities. There are many unique physical phenomena in the adjacent space, and the atmospheric density changes drastically. For example, when rising from an altitude of 20km to an altitude of 40km, the atmospheric dens...

AI Technical Summary

Problems solved by technology

Due to the harsh environment of the adjacent space, not only the interference of the earth's reflection light, but also complex stray light interference will be formed after the sunlight is reflected by the earth's atmosphere, which makes the imaging background very complicated, and what is observed is a point target at a long distance under the complex background. The target has no contour features, complex spectral features, and individual target motion features are not obvious, which increases the difficulty for the selection and implementation of detection and recognition algorithms

In addition, as the detection distance changes, large-scale changes may occur in nearby space targets, which also creates difficulties for the continuous extraction of target features

[0003] At present, radars are mostly used to monitor moving targets in the air at home and abroad. Due to the extremely fast flying speed of the targets in the adjacent space, when flying in the thin atmosphere of the adjacent space, the surface of the aircraft will rub against the air violently to generate plasma, and the plasma has a certain scattering effect on radar waves. Function; at the same time, the near-space target is small and the distance is long, coupled with the stealth design, so the radar reflection area is small; in addition, the near-space target has a low flying altitude and is more affected by the curvature of the earth, which is not conducive to radar observation

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