In the infancy of radar, signal-to-noise ratio was a popular measure of the effectiveness of a radar receiving system for combating noise. Increased signal power, with respect to average noise power, made it easier to distinguish a signal from background noise. Further, the parameters of a target echo, such as amplitude, (range) delay, and doppler frequency shift, could be estimated more accurately with increased signal-to-noise ratio. It was apparent that both parameter estimation and detection were dependent on signal-to-noise ratio - at least in a qualitative sense.
Maximization of Signal-to-Noise Ratio and the Matched Filter, Page 1 of 2
< Previous page Next page > /docserver/preview/fulltext/books/ra/sbra028e/SBRA028E_ch5-1.gif /docserver/preview/fulltext/books/ra/sbra028e/SBRA028E_ch5-2.gif