Title :
The Detection and Tracking of Weak Frequency Line Based on Double-detection Algorithm
Author :
Lu, Mingzhi ; Li, Meng ; Mao, Weining
Author_Institution :
Southeast Univ., Nanjing
Abstract :
The paper aims to deal with the problem of automatic detection of narrow-band signals which is encountered in a passive sonar system. The double-detection algorithm at low signal-to-noise ratio is put forward on a basis of double-thresholds detection, and realizes the intelligence methods of frequency line detection and tracking. It makes frequency line detection and tracking more intelligent. The results of experimental data processing reveal that this method can increase the possibility of weak frequency line detection and tracking, and decrease the false alarm rate.
Keywords :
signal detection; sonar; automatic detection; double-detection algorithm; double-thresholds detection; narrow-band signals; passive sonar system; signal processing; weak frequency line detection; weak frequency line tracking; Antennas and propagation; Databases; Electromagnetic compatibility; Frequency estimation; Microwave antennas; Microwave propagation; Microwave technology; Narrowband; Signal processing algorithms; Sonar detection; double-detection; frequency line; frequency tracking; signal processing;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-1045-3
Electronic_ISBN :
978-1-4244-1045-3
DOI :
10.1109/MAPE.2007.4393486
