Ambiguity Surface Statistics and Fluctuations.
ANALYTICAL TECHNOLOGY APPLICATIONS CORP MOUNTAIN VIEW CA
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The use of cross-correlation for detecting and tracking the source of signals received at spatially separated receiving sites has received considerable attention in the research community during recent years. The limited understanding of the statistical nature of ambiguity surfaces is based on the statistics of a single cell in the absence of signal and noise power fluctuations and for equal signal and procesing bandwidths herein called matched containment. The effects of power level fluctuations and signal overcontainment, where the processing bandwidth is larger than the signal bandwidth, must be quantitied in order to fully understand the statistical nature of ambiguity surfaces under realistic operational conditions. The effects of signal overcontainment have been quantified n the absence of fluctuations. Signal and noise power level fluctuations and the rate at which power levels fluctuate can adversely affect the signal-to-noise ratios required to attain a desired performance. The study results presented in this report address the effects of signal and noise power fluctuations on detection performance.
- Statistics and Probability