One is the active fourier telescopy ( afterward named “ aft ” for short ) , another is “ spectrum shifting ” 一种是主动式傅立叶望远术(以下简称“ aft ” ) ,另一种是“频谱搬移法” 。
2.
The multi - beam receiver is also uniquely suited for resolving one of the nagging problems of modern radio - telescopy : screening out radio frequency interference ( rfi ) 多波束接收器也是唯一适合解决现代射电望远镜的一个通病：滤掉电波干扰。
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In recent years , the worldwide researchers pay much attention to fourier telescopy . it is an active imaging technique that encodes the information in the temporal instead of spatial domain , then receives the speckle and deposed of it to reconstruction the object image . now , the high - resolution technique is under the condition of deeply researched 它是一种主动式干涉成像技术,这一技术通过时域内的相位的调制完成直线条纹对目标的扫描,从而达到对深空目标频谱的抽样,然后接收其散射回波,对回波信号进行处理,进而还原出目标的像。
