Перевод названия: Detection of spread spectrum frequency-manipulated signals with time delay
Тип публикации: статья из журнала
Год издания: 2016
Ключевые слова: шумоподобный сигнал, поиск сигнала, помехоустойчивость, минимальная частотная модуляция, бинарная офсетная модуляция, spread spectrum signal, search signal, interference immunity, minimum shift keying, binary offset carrier modulated
Аннотация: Предложен квазиоптимальный алгоритм поиска по времени запаздывания шумоподобных сигналов с минимальной частотной модуляцией формата MSK-BOC. Проведен анализ его помехоустойчивости, приведены результаты статистического моделирования рассмотренного алгоритма. In the article there is a quasi-optimal double-level search algorithm the sПоказать полностьюpread spectrum signal (SSS) with minimal frequency shift keying of MSK-BOC format due to delay time. On the first level there is a search on the envelope line of code (without subcarrier frequency) with cell size equal to meander chip duration. The search algorithm for MSK-BOC signal, which is invariant to subcarrier frequency is based on considering of every quadrature signal component as two components on «high» and «low» frequencies. On the second level the additional search of main peak of MSK-BOC signal is produced. For this case the traditional parallel procedure of searching the cell size equal to a half of meander chip duration and equal and with three channels is used. The immunity analysis of considered search algorithm is produced with using a probability of abnormal errors exceeding a half of additional searching step as criterion. The analysis results show that the loss in immunity of quasi-optimal searching algorithm in comparison with the optimal searching algorithm is less than 1,5 dB and it is entirely repaid by the benefits of practical implementation.
Журнал: Успехи современной радиоэлектроники
Выпуск журнала: № 11
Номера страниц: 114-117
ISSN журнала: 20700784
Место издания: Москва
Издатель: Закрытое акционерное общество Издательство Радиотехника