US 11,054,521 B2
Hyperspectral sonar
Jens Steenstrup, Austin, TX (US); Christopher Tiemann, Austin, TX (US); Peter Bilodeau, Austin, TX (US); Mark Chun, Austin, TX (US); and Kirk Hobart, Austin, TX (US)
Assigned to R2SONIC, LLC, Austin, TX (US)
Filed by R2SONIC, LLC, Austin, TX (US)
Filed on Aug. 30, 2018, as Appl. No. 16/118,327.
Application 16/118,327 is a continuation of application No. 15/700,482, filed on Sep. 11, 2017, granted, now 10,067,228.
Prior Publication US 2019/0079185 A1, Mar. 14, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 15/00 (2020.01); G01S 15/88 (2006.01); G01S 7/521 (2006.01); G06K 9/62 (2006.01); H04L 27/26 (2006.01); G06K 9/00 (2006.01); G01S 15/87 (2006.01); G01S 15/32 (2006.01); G01S 15/89 (2006.01); G01S 15/10 (2006.01); G01S 7/536 (2006.01)
CPC G01S 15/88 (2013.01) [G01S 7/521 (2013.01); G01S 7/536 (2013.01); G01S 15/102 (2013.01); G01S 15/32 (2013.01); G01S 15/87 (2013.01); G01S 15/89 (2013.01); G06K 9/00496 (2013.01); G06K 9/62 (2013.01); H04L 27/2601 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sonar vertical survey system comprising:
a broadband multibeam echo sounder system that avoids the use of matched filters, the system for installation on a water going vehicle;
an acoustic transceiver connected with plural transducers in a single linear transmit array arranged orthogonally with respect to plural transducers in a single linear receive array to form a Mills Cross;
the transceiver synthesizing a broadband transmitter waveform including a frequency modulated (FM), noise-like, click, or click train waveform with a center frequency between 20 kHz and 1000 kHz;
the transceiver operating within a band having a bandwidth of 100 kHz or more;
the broadband waveform exciting all frequencies within the band using the transmit array such that a 180-degree or smaller swath of a waterbody bottom or water column is ensonified by the waveform;
the receive array receives a waveform echo from ensonified scattering centers;
wherein data corresponding to the receive array returns are stored;
wherein band pass filters or Fourier transforms are applied to the stored data for mathematical analysis to produce filtered subsets or transformed subsets; and,
wherein a mathematical comparison is performed on at least two of the filtered subsets or transformed subsets and the results or information derived from the results of said mathematical comparison is available for subsequent use.