公开(公告)号：US4465940A

公开(公告)日：1984-08-14

申请号：US368787

申请日：1982-04-15

Applicant: Herman Graff ,  James D. Joseph

Inventor： Herman Graff ,  James D. Joseph

IPC: G01J3/00 ,  G01J3/28 ,  G01J3/36 ,  H01J40/14 ,  F41G7/00 ,  G01J1/00

CPC classification number: G01J3/36 ,  G01J3/2803

Abstract: An apparatus directed to a signal processing circuit for combining data from several spectral bands to enhance the signal-to-background ratio of a target detection system. Two spectral bands, with separate sensing arrays, receive analog signals which are fed to separate multiplexer units. From the multiplexers, the analog signals are applied to a comparator where they are compared with each other and also separately applied to shift registers where the signals are retained for further processing. If, during comparison, the ratio of the two bands is less than a threshold, there is an absence of cloud return and the signals stored in both shift registers are combined in a final output register. If the ratio of the two bands is more than a threshold, the band having the most cloud return is not used and the shift register containing the greater percentage of target return is processed through the output register.

Abstract translation: 一种针对信号处理电路的装置，用于组合来自若干光谱带的数据，以增强目标检测系统的信号与背景比。 具有单独的感测阵列的两个光谱带接收被馈送到分离的多路复用器单元的模拟信号。 从多路复用器中，模拟信号被施加到比较器，在比较器中它们彼此进行比较，并且还单独地应用于移位寄存器，其中信号被保留用于进一步处理。 如果在比较期间两个频带的比率小于阈值，则不存在云返回，并且存储在两个移位寄存器中的信号被组合在最终的输出寄存器中。 如果两个频带的比例大于阈值，则不使用云返回最多的频带，并且通过输出寄存器处理包含较大百分比的目标返回的移位寄存器。