An optimum PN code search technique for a given apriori signal location density
Abstract
A method is presented for optimizing (minimizing) the acquisition time for a PNtype spread spectrum system when the a priori probability density function is not uniform. For an assumed a priori Gaussian density function, calculations show that the acquisition time, when the 0.5 probability acquisition time is used as a measure of acquisition time, is reduced by 40% for a cell detection probability of 0.25 and when three sweeps are used. For the same parameters and with four sweeps the acquisition time is reduced by 41%. When the acquisition time probability is set to 0.9 instead of 0.5, the reduction is 25% of the uniform sweep time.
 Publication:

NTC '78; National Telecommunications Conference, Volume 2
 Pub Date:
 1978
 Bibcode:
 1978ntc.....2...18H
 Keywords:

 Pseudonoise;
 Radar Detection;
 Search Radar;
 Target Acquisition;
 Normal Density Functions;
 Optimization;
 Probability Density Functions;
 Space Communications, Spacecraft Communications, Command and Tracking