Accounting for Frequency Dilation when Using Joint Multiple Bin Processing
Lisa M. Ehrman, William Dale Blair · 2006
By exploiting the spillover of target energy in ad- jacent matched filter samples, the joint multiple bin processing (JMBP) algorithm is able to resolve detections from closely- spaced and/or separating targets much better than standard monopulse processing algorithms. This leads to significantly improved track completeness ratios (the ratio of the num- ber of tracks that are maintained by the tracker to the number of tracks that should be maintained). However, the improvements in track completeness often come at the cost additional spurious and redundant tracks, many of which are the result of frequency-dependent shifts in the sum and difference channel voltage patterns. This paper describes a method for calibrating the difference channel voltages to reduce the number of spurious and redundant tracks occurring in the tracker when JMBP is used. In doing so, it allows trackers to exploit the benefits of JMBP without as many potentially harmful side-effects.