Polarization multispectral aerial photographic camera based on monolithic area-array CMOS detector

Abstract

The invention relates to a polarization multispectral aerial photographic camera based on a monolithic area-array CMOS detector. The polarization multispectral aerial photographic camera comprises a large-field-of-view optical imaging system, a band-pass filter, a polarization beam splitting film, the area-array CMOS detector and an electronics processing circuit which are sequentially arranged from left to right, wherein the large-field-of-view optical imaging system is composed of 15 spherical lenses which are arranged in sequence; the area-array CMOS detector serves as a focal plane array,realizes the effect of replacing a linear array device with an area-array device by means of a window opening function of the CMOS detector, and further improves the installation and integration precision of a focal plane assembly. The polarization multispectral aerial photographic camera based on the monolithic area-array CMOS detector has a system field of view capable of reaching 83.7 degrees,effectively eliminates distortion and color aberration, allows an optical path to reach telecentric in a quasi-image space, and has high imaging quality.

Description

technical field [0001] The invention belongs to the technical field of space remote sensing and surveying and mapping, and relates to a polarization multispectral aerial camera based on a single-chip area array CMOS detector. Background technique [0002] Optical remote sensing technology is divided into intensity remote sensing, spectral remote sensing and polarization remote sensing according to the different characteristics of the reflected electromagnetic waves of the detection target. Get applied. The above remote sensing technologies can obtain target information from different aspects, and through the fusion of different information, more information about the target can be obtained. Spectral detection technology is relatively mature. Three-line array stereo detection is generally achieved by obtaining information in different directions of the target through three optical systems with a certain intersection angle. Such a system is heavy and not suitable for the work...

AI Technical Summary

Problems solved by technology

Polarization detection requires the acquisition of target polarization information with high real-time performance, and the method of rotating the polarizer has poor simultaneity. The polarization information obtained by means of amplitude division, aperture division and focal plane division has high simultaneity, but the cost is relatively high.

Images