Based on the traditional difference algorithm, a new background construction and updating method is proposed.
在传统的差分算法基础上，提出了一种新的背景的建立和更新的解决方法。
By use of this algorithm, both difference and differential sensitivity can be calculated.
这个方法，既可求差分灵敏度，也可求微分灵敏度；
The principle of producing phase difference of two beams and its algorithm are studied.
阐明了双波束相位差产生的原理和计算方法。
The principle of producing phase difference of two beams and its algorithm are studied.
阐明了双波束相位差产生的原理和计算方法。
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