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Two custom Field Programmable Gate Array signal processors provide real time continuous match filtering with dynamic templates. A new method is implemented to select the transmit time from a random set based on minimizing interference. Experiments demonstrate the increased refresh rate, interference rejection, and maps generated by the sonar ring.<\/jats:p>","DOI":"10.1017\/s0263574711001275","type":"journal-article","created":{"date-parts":[[2011,12,8]],"date-time":"2011-12-08T10:16:14Z","timestamp":1323339374000},"page":"1051-1062","source":"Crossref","is-referenced-by-count":4,"title":["A double refresh rate sonar ring with FPGA-based continuous matched filtering"],"prefix":"10.1017","volume":"30","author":[{"given":"Damien C.","family":"Browne","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lindsay","family":"Kleeman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2011,12,8]]},"reference":[{"key":"S0263574711001275_ref21","unstructured":"S. Shoval and J. 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