US 11,668,820 B2
Sonar data compression
Jens Steenstrup, Austin, TX (US); Kirk Hobart, Austin, TX (US); Mark Chun, Austin, TX (US); Christopher Tiemann, Austin, TX (US); and Peter Bilodeau, Austin, TX (US)
Assigned to R2SONIC, LLC, Austin, TX (US)
Filed by R2SONIC, LLC, Austin, TX (US)
Filed on Mar. 7, 2020, as Appl. No. 16/812,286.
Application 16/812,286 is a continuation of application No. 15/581,468, filed on Apr. 28, 2017, granted, now 10,605,914.
Application 15/581,468 is a continuation in part of application No. 15/476,137, filed on Mar. 31, 2017, granted, now 10,132,924, issued on Nov. 20, 2018.
Claims priority of provisional application 62/329,631, filed on Apr. 29, 2016.
Prior Publication US 2020/0264304 A1, Aug. 20, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 15/89 (2006.01); G01S 15/32 (2006.01); G01S 7/52 (2006.01); G01S 7/534 (2006.01); G01S 15/58 (2006.01)
CPC G01S 15/8902 (2013.01) [G01S 7/52003 (2013.01); G01S 7/534 (2013.01); G01S 15/32 (2013.01); G01S 15/325 (2013.01); G01S 15/586 (2013.01); G01S 15/89 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A sonar data compression system comprising:
plural projectors excited at time to for ensonifying a particular geometric space wherein multiple ones of the projectors emit acoustic signals whose frequency and phase do not vary independently from each other;
echoes from the geometric space received on plural hydrophones at each of plural times t1, t2 . . . ;
receive beamformers that form at one or more times tx Q beams with respective angles of arrival;
each of the Q beams associated with a magnitude Mtx,i is indexed by time tx and beam number i; and,
at each time tx a beam with a largest magnitude (Mtx,i)max1 is identified as a characterizing beam;
wherein data associated with these characterizing beams are used as a compressed characterization of the ensonified space.