US 12,292,503 B2
Techniques for ghosting mitigation in coherent LIDAR systems using multiple chirp rates
Kumar Bhargav Viswanatha, Santa Clara, CA (US); Carlo Giustini, Mountain View, CA (US); Esha John, Sunnyvale, CA (US); Jose Krause Perin, Mountain View, CA (US); James Nakamura, Chicago, IL (US); and Rajendra Tushar Moorti, Mountain View, CA (US)
Assigned to Aeva, Inc., Mountain View, CA (US)
Filed by AEVA, INC., Mountain View, CA (US)
Filed on Feb. 17, 2023, as Appl. No. 18/111,481.
Application 18/111,481 is a continuation of application No. 17/702,601, filed on Mar. 23, 2022, granted, now 11,585,926.
Claims priority of provisional application 63/165,628, filed on Mar. 24, 2021.
Prior Publication US 2023/0213651 A1, Jul. 6, 2023
Int. Cl. G01C 3/08 (2006.01); G01S 7/493 (2006.01); G01S 17/32 (2020.01); G01S 17/58 (2006.01)
CPC G01S 17/32 (2013.01) [G01S 7/493 (2013.01); G01S 17/58 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting, towards a target, a set of chirp signals;
receiving, from the target, a set of adjusted chirp signals, wherein the set of adjusted chirp signals is associated with a first set of peaks and a second set of peaks; and
determining, based on a minimization of a difference between a first parameter associated with the first set of peaks and a second parameter associated with the second set of peaks, a degree of ghosting mitigation to compensate for a ghost target appearing in a point cloud at a location where no real target exists.