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- W1989688077 abstract "ABSTRACT The On-Array Signal Processing (OASP) program has emphasized implementation of TDI processing on-array as anapproach to reducing the connector and conductor count in proportion to the number ofdetectors in the TDI set. In spike noiseenvironments theTDlprocess is modified to aspike adaptiveTDl(SATDI)process which combinesTDl with spike suppression.However, when significant baseline inequalities exist among the different detector channels the performance of SATDI becomes seriously degraded, consequently it is necessary to include baseline equalization in the on-array processing architecture. Performance of the baseline equalization circuits, using analog methods of sufficient simplicity for on-arrayimplementation, was evaluated and shown to be inadequate for some important high background applications. This paper relates the SATDI performance to the level of the background encountered and it describes alternative approaches to spike spike suppression that avoid the baseline equalization problem. In particular, this paper identifies theLowest of N and the Iterative Lowest of 2 algorithms as spike suppression methods that are independent of detectorbaselines. These algorithms were selected for their superior performance in high background conditions, relative to SATDI,andfor theirsuitability forCCD implementation using technologydevelopedby Rockwelllnternational for the OASP program.1. BACKGROUNDInterest in on-array signalprocessing, OASP, was inspired by implementation complexities and difficulties encounteredwith contemporary scanning JR sensor designs as exemplified by the AOA sensor. The wire count leaving the focal planerepresents serious thermal and connector design problems. The size, weight and power of out-of-sensor electronics is alsoexcessive and needs to be reduced. The latter problem might be resolved using modern packaging methods but the critical" @default.
- W1989688077 created "2016-06-24" @default.
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- W1989688077 date "1990-11-01" @default.
- W1989688077 modified "2023-09-23" @default.
- W1989688077 title "<title>On-array spike suppression signal processing</title>" @default.
- W1989688077 doi "https://doi.org/10.1117/12.23012" @default.
- W1989688077 hasPublicationYear "1990" @default.
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