激光与红外
激光與紅外
격광여홍외
LASER & INFRARED
2009年
11期
1177-1182
,共6页
CMOS%TDI%长波%采集系统%低噪声
CMOS%TDI%長波%採集繫統%低譟聲
CMOS%TDI%장파%채집계통%저조성
CMOS%TDI%long wavelength%acquisition system%low noise
480×6长波制冷红外探测器是一款480列,6阶TDI的高探测器率的CMOS探测器.以此探测器为例,介绍了长波红外探测器采集系统的低噪声设计过程.着重解决了硬件电路在满足驱动的条件下如何降低噪声的问题,试验结果表明采集系统工作正常,且具有较好的噪声特性,在300 K黑体直接照射情况下,整个采集系统所测得的均值噪声为1.20 mV,信噪比可达到55 dB以上.
480×6長波製冷紅外探測器是一款480列,6階TDI的高探測器率的CMOS探測器.以此探測器為例,介紹瞭長波紅外探測器採集繫統的低譟聲設計過程.著重解決瞭硬件電路在滿足驅動的條件下如何降低譟聲的問題,試驗結果錶明採集繫統工作正常,且具有較好的譟聲特性,在300 K黑體直接照射情況下,整箇採集繫統所測得的均值譟聲為1.20 mV,信譟比可達到55 dB以上.
480×6장파제랭홍외탐측기시일관480렬,6계TDI적고탐측기솔적CMOS탐측기.이차탐측기위례,개소료장파홍외탐측기채집계통적저조성설계과정.착중해결료경건전로재만족구동적조건하여하강저조성적문제,시험결과표명채집계통공작정상,차구유교호적조성특성,재300 K흑체직접조사정황하,정개채집계통소측득적균치조성위1.20 mV,신조비가체도55 dB이상.
The 480×6 cooled long wavelength infrared detector is a 480 row,6-stage TDI,high detection rate CMOS detector. The paper gives a detailed description of design procedure on the principle of low noise. It focuses on the problem how to reduce noise under the circumstance of guarantee ability of drive load. The experiment result demonstrates that system works well and has a comparably good noise characteristic. The RMS noise of the acquisition system is 1.20 mV and the SNR reaches over 55 dB under the irradiation of blackbody at 300 K.
