HYDROACOUSTICS
ANNUAL JOURNAL |
START | NEW VOL 20 | SEARCH | STATISTICS | PAS - GDANSK DIVISION |
pp. 75-84, vol. 20, 2017 Andrzej Jedel Gdansk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Poland Jacek Marszal Gdansk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Poland Roman Salamon Gdansk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Poland Key words: CW FM sonar; pseudorandom sequence; Doppler effect; sonar parameters Abstract: Although used in the classic silent sonar, the CW FM sounding signal has a major flaw which is its inaccuracy in determining the distance to a target. The authors of the article have developed a concept of silent sonar using frequency modulation signals switched by pseudorandom codes, already discussed in their previous work. This article presents a detailed analysis of errors in CW FM sonar with pseudo-random sequence code modulation confronted with errors which occur in similar sonar without code modulation.
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