Документ взят из кэша поисковой машины. Адрес оригинального документа : http://mavr.sao.ru/hq/vch/Publications/Eng/html/NN/NN.html
Дата изменения: Unknown
Дата индексирования: Fri Dec 28 19:58:20 2007
Кодировка:
Поисковые слова: п п р р р р р р р р р р р р р р

A Method of Integrating

Next: Introduction

A spike immunity method of digital integrating radiometer signals

Vladimir N. Chernenkov

Abstract:

A spike immunity method of digital integrating radiometer signals in the jamming environment is described. The certain integrating algorithm selection is adaptively made. The purpose of the method is real-time signal processing, and the basic is an alternative selection of the least offset signal estimation using nonparametric "Nearest Neighbor" rule. It is assumed that the signal has a single mode probability distribution, close to normal. The additive spike-like jam makes the "tails" of the distribution "heavier" which leads to different offsets for linear and rank mean estimation on the integrating interval. The integrating interval is chosen significantly less than double bandwidth of antenna system and radiometer. For the given assumption of the sorts of signal and jam the method works faster and delivers better efficiency as compared to well known rank estimations. The extra correlation of the subsequent samples does not exceed 16%. The results of the numerical modeling and experimental method testing are given. The results show the improvement of the radiometer sensitivity by about 20--25%.

Vladimir Chernenkov
Mon May 5 14:52:38 MSD 1997