Echo Splitting in Linear FM Doppler Ranging Systems.
Approved for public release, distribution unlimited === No PDF currently available. === Echo splitting is a phenomenon that produces difficulties in estimating target range and speed for radar and sonar systems. It occurs when more than one returned pulse is received from a single target for each tr...
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Language: | en_US |
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Monterey, California. Naval Postgraduate School
2014
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Online Access: | http://hdl.handle.net/10945/40050 |
Summary: | Approved for public release, distribution unlimited === No PDF currently available. === Echo splitting is a phenomenon that produces difficulties in estimating target range and speed for radar and sonar systems. It occurs when more than one returned pulse is received from a single target for each transmitted pulse. This thesis investigates the effects of echo-splitting distortion of a linear frequency modulated (chirp) signal. An ambiguity function is proposed for both narrow-band and wideband analysis of multiple and overlapping target returns. The double echo situation is examined in detail and equations are developed for both the narrow-band and wideband cases. Finally, using typical sonar parameters, sample computer drawn plots of these ambiguity functions are presented. |
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