CAJ | 학술논문

为了降低飞行器倾斜成像工作过程中视轴角误差对 T DICCD空间相机成像质量的影响，提出满足相机成像质量的视轴角范围及控制误差的要求。根据空间相机成像机理，给出了焦面像移速度以及由视轴角误差引起的像移速度匹配误差计算公式，分析了视轴角对地面像元分辨力的影响。并以调制传递函数（MTF）为约束条件给出了不同积分级数下视轴角的范围。通过实际工程参数计算得出，当视轴角控制误差为0．8°时，满足96级T DICCD成像质量要求的视轴角应不大于12．75°；若要满足96级T DICCD倾斜成像时视轴角达到25°，则视轴角控制误差应优于0．4°。
위료강저비행기경사성상공작과정중시축각오차대 T DICCD공간상궤성상질량적영향，제출만족상궤성상질량적시축각범위급공제오차적요구。근거공간상궤성상궤리，급출료초면상이속도이급유시축각오차인기적상이속도필배오차계산공식，분석료시축각대지면상원분변력적영향。병이조제전체함수（MTF）위약속조건급출료불동적분급수하시축각적범위。통과실제공정삼수계산득출，당시축각공제오차위0．8°시，만족96급T DICCD성상질량요구적시축각응불대우12．75°；약요만족96급T DICCD경사성상시시축각체도25°，칙시축각공제오차응우우0．4°。
In order to reduce the influence of boresight angle error on the image quality of the time delay integration charge couple device (TDICCD) space camera during the tilted imaging process ,the requirements for the scopes of boresight angle and its control errors were put for‐w ard to meet the image quality of space camera .According to the imaging mechanism of space camera ,the calculation formula of focal plane image motion speed and that of the matching er‐ror of image motion speed caused by boresight angle error were presented ,and the effect of boresight angle on the ground pixel resolution was analyzed .Moreover ,the ranges of boresight angles for different integration degrees were given under the constraints of modulation transfer function (M T F) .From practical calculations ,it is concluded that ,w hen the control error of boresight angle is 0 .8° ,the boresight angle should be less than 12 .75°or if the boresight angle needs to reach 25° ,the control error should be less than 0 .4°to satisfy the quality requirements of TDICCD of which the integration degree is 96 .