Precision sun sensor applied to image stabilizing system

Abstract

The invention relates to a precision sun sensor applied to an image stabilizing system. The precision sun sensor comprises a filtering system, a focusing lens and a PSD (Phase-Sensitive Detector), wherein the filtering system at least comprises a primary optical filter and a secondary optical filter, the primary optical filter is arranged at the right front end of the precision sun sensor for reflecting sunlight heat and attenuating energy of incident rays in an observation wave band; the focusing lens is arranged behind the primary optical filter and is used for gathering sunlight after primary filtering onto the focal position of the focusing lens; the secondary optical filter is arranged in right front of the focal plane of the focusing lens and is used for secondarily filtering gathered light rays; the PSD is arranged at the focal position of the focusing lens and is used for converting a solar facula energy signal into an electric signal and recognizing angular offset of the incident rays by an acquired four-quadrant electrical signal.

Description

technical field [0001] The invention relates to the field of solar activity monitoring satellites, in particular to a fine solar sensor applied to an image stabilization system of a solar high-resolution imaging instrument. Background technique [0002] With the development of space science and the detection needs of space situational awareness, it is urgent to develop solar monitoring satellites and high-resolution solar activity imaging technology. The image stabilization system used to eliminate image blur caused by satellite platform jitter is a high-resolution solar imaging observation instrument. important parts of. The core structure of a high-performance image stabilization system is a high-resolution fine solar sensor. [0003] Throughout the world's advanced solar observation satellites such as SOHO, Solar-B, TRACE, STEREO, and SDO, the precise solar sensors of their image stabilization systems can be classified into two categories in terms of technical implementa...

AI Technical Summary

Problems solved by technology

The shortcomings of the precise solar sensor based on the CCD correlation tracking algorithm are very obvious. Its correlation algorithm is more complicated, the amount of calculation is large, it needs additional hardware support and cannot be applied to the short-wave imaging system; the precise solar sensor system based on the Limb Sensor requires additional Advanced guide mirror optical system, Limb Sensor's discrete photodiodes have strict requirements on consistency, device level and assembly process

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