期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2012
卷号：3
期号：2
页码：880-882
语种：English
出版社：Ayushmaan Technologies
摘要：Continuous Time Frequency Modulated Sonar was proposed to find stationary targets in underwater using frequency modulated signals. In CTFM Sonar, the chirp signal is transmitted periodically. The received signal echo is multiplied with the transmitted signal to get difference frequencies. This difference frequency is used to find the range. But we get wrong difference frequency for some duration of observation time. This duration in which we get wrong difference is known as blind time. Presently Dual Demodulator CTFM Sonar is used to overcome blind time. In this paper a Neural Network approach to overcome blind time problem in CTFM sonar is presented.
