Overall Design and Hardware Realization of Space Stargazing Camera

Abstract

In order to improve the accuracy of satellite attitude, a complete stargazing camera was designed using KAC-06040 CMOS digital image sensor. An optical system with a focal length of 1220mm, an F-number of 6.71, and a field of view of 0.84 degrees was designed. The electronics system uses FPGA as the core control device to control CMOS to output digital signals, and transmit the signals back to the satellite data transmission system through TLK2711. The star camera has two working modes of imaging and transmitting the threshold and coordinate information of the star point. Through the field imaging experiment, it can be known that the camera has fine imaging quality, strong transplantability and high reliability. Within the field of view, about 1.2 stars can be photographed, and stars of magnitude 9 can be observed at the same time, which can effectively assist the star sensor to work.