发明名称 |
Readout integrated circuit (ROIC) for laser detection and ranging (LADAR) system and method for using same |
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 Deltat 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.
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申请公布号 |
US2006232760(A1) |
申请公布日期 |
2006.10.19 |
申请号 |
US20050108921 |
申请日期 |
2005.04.18 |
申请人 |
ASBROCK JAMES F;DIETRICH GEORGE W;LINDER LLOYD F |
发明人 |
ASBROCK JAMES F.;DIETRICH GEORGE W.;LINDER LLOYD F. |
分类号 |
G01C3/08;G06K9/00 |
主分类号 |
G01C3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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