It was further explained that the backgroundfluctuation limit was not the final limit of the detector sensitivity.
进一步说明背景光子噪声并不是探测器灵敏度的最后极限。
2
The optimum detector for passive detection is energy detector. Yet energy detector usually deteriorates due to fluctuation of background interference and a decrease in SNR.
The algorithm adopts low pass filter to estimate the background and calculates the standard deviation to estimate the fluctuation of background to get the local adaptive detection threshold.