Readout integrated circuit (ROIC) for laser detection and ranging (LADAR) system and method for using same
    3.
    发明申请
    Readout integrated circuit (ROIC) for laser detection and ranging (LADAR) system and method for using same 有权
    用于激光检测和测距(LADAR)系统的读出集成电路(ROIC)及其使用方法

    公开(公告)号:US20060232760A1

    公开(公告)日:2006-10-19

    申请号:US11108921

    申请日:2005-04-18

    IPC分类号: G01C3/08 G06K9/00

    摘要: Disclosed is a LADAR system and a method for operating same. The LADAR system includes circuitry for generating the electrical signal with an optical signal detector using N discrete samples; a bank of M parallel sample/hold circuit unit cells individual ones of which operate with an associated sample/hold clock, where each sample/hold clock is shifted in time by a fixed or programmable amount Δt relative to a sample/hold clock of an adjacent sample/hold circuit unit cell; and further includes circuitry for sequentially coupling a sampled value of the electrical signal from a first output of individual ones of at least some of the M parallel sample/hold circuit unit cells to an analog to digital converter circuit. Each of the M parallel sample/hold circuit unit cells has a second output for outputting a digital signal for indicating the state (low or high) during a time that the associated sample/hold clock allowing for time of arrival determination. The LADAR system further includes or is coupled to a signal processor for deriving an image of the object and a range to the object based on signals at the first and second outputs. Assuming an effective sample/hold circuit sampling rate of X samples per second, a sampling rate of each of the M parallel sample/hold circuit unit cells can be X/M samples per second.

    摘要翻译: 公开了一种LADAR系统及其操作方法。 LADAR系统包括用于使用N个离散样本的光信号检测器产生电信号的电路; 一组M个并行采样/保持电路单元单元,其中单独的一个采样/保持时钟以相关联的采样/保持时钟操作,其中每个采样/保持时钟相对于采样/保持时钟的采样/保持时钟在时间上移动固定或可编程量的Deltat 相邻采样/保持电路单元; 并且还包括用于将来自所述M个并行采样/保持电路单元单元中的至少一些中的各个的电信号的采样值顺序耦合到模数转换器电路的电路。 每个M个并行采样/保持电路单元具有第二输出,用于在允许进入到达时间的相关采样/保持时钟确定的时间期间输出用于指示状态(低或高)的数字信号。 LADAR系统还包括或耦合到信号处理器,用于基于第一和第二输出处的信号来导出对象的图像和对象的范围。 假设每秒X个样本的有效采样/保持电路采样率,每个M个并行采样/保持电路单元单元的采样率可以是每秒X / M个采样。