Real-time adjusting of drift angle could decrease the influence on image quality caused by attitude change and prolong continuous photography time with more TDI integral progression

when space camera was photographing. First

the requirement on Real-time adjusting of drift angle was analyzed in detail and the real-time adjusting tactic was presented. Then the structure of drift angle adjusting system and the operating principle of real-time adjusting were introduced. Finally

a batch type real-time adjusting method was presented and experimented with it. Experimental results indicate that drift angle partial difference can be adjusted below 4.2′

adjusting error is no larger than 72.17″

adjusting time is less than 1s

MTF is 99.67％ on photographing. It totally satisfies the requirement that real-time and long period adjusting of drift angle is no essential influence on image in the process of photographing.