发明名称 |
FREQUENCY MEASUREMENT FOCAL PLANE ARRAY INPUT CIRCUIT |
摘要 |
The invention measures the frequency of a heterodyne laser radar (LADAR) system signal in the input cell of a focal, plane array (FPA). Embodiments amplify the return signal, and drive it into a counter for a fixed period of time. The frequency is the number of counts divided by the count time. An example design amplifier amplifies the return of a single photon response of an avalanche photodiode with a gain of 100 into a digital signal level at a 200 MHz rate with only 84 µW, demonstrating the feasibility of the approach. |
申请公布号 |
WO2017019298(A1) |
申请公布日期 |
2017.02.02 |
申请号 |
WO2016US41971 |
申请日期 |
2016.07.13 |
申请人 |
BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. |
发明人 |
HAIRSTON, Allen W.;MADISON, Gary M. |
分类号 |
G01C3/08;G01B9/02;G01C3/02 |
主分类号 |
G01C3/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|