目标模拟器用来模拟作为卫星姿态敏感器的参考目标(太阳、地球和恒星等)的环境特性。
Target simulators are used to simulate the environment character of reference objects (the sun, the earth and stars) as satellite attitude sensors.
但在实际应用中，A TR系统所获取的外场的目标与背景总是处于随时间不断变化的条件下，与系统所存储的参考目标通常都不会一致，从而导致相关识别SNR劣化。
In application, the acquired target and background by a ATR system are always changed temporarily, causing the disaccord of the reference and acquired target and the degradation of correlation SNR.
框架并不规定要填充的单元格的符号或顺序，因为这一知识点已经超出了参考结构目标的范围。
The framework does not dictate or prescribe a notation or an order in which cells are to be filled, as this knowledge lies beyond its goal of providing a reference structure.
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