US 12,461,239 B2
Method and system for doppler detection and doppler correction of optical chirped range detection
Stephen C. Crouch, Mountain View, CA (US); Trenton Berg, Mountain View, CA (US); Randy R. Reibel, Mountain View, CA (US); and James Curry, Mountain View, CA (US)
Assigned to AURORA OPERATIONS, INC., Pittsburgh, PA (US)
Filed by AURORA OPERATIONS, INC., Pittsburgh, PA (US)
Filed on Sep. 18, 2023, as Appl. No. 18/469,002.
Application 18/469,002 is a continuation of application No. 16/464,657, granted, now 11,802,965, previously published as PCT/US2017/062703, filed on Nov. 21, 2017.
Claims priority of provisional application 62/428,109, filed on Nov. 30, 2016.
Prior Publication US 2024/0241256 A1, Jul. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 17/58 (2006.01); G01S 7/491 (2020.01); G01S 7/4911 (2020.01); G01S 7/493 (2006.01); G01S 17/26 (2020.01); G01S 17/34 (2020.01); G01S 17/89 (2020.01)
CPC G01S 17/58 (2013.01) [G01S 7/491 (2013.01); G01S 7/4911 (2013.01); G01S 7/493 (2013.01); G01S 17/26 (2020.01); G01S 17/34 (2020.01); G01S 17/89 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A light detection and ranging (LIDAR) sensor system, comprising:
a laser source configured to generate at least one laser signal;
a modulator configured to modulate the at least one laser signal to generate a plurality of first signals that increase in frequency and a plurality of second signals that decrease in frequency; and
one or more processors configured to:
determine a plurality of first ranges to an object using a plurality of first return signals from reflection of the plurality of first signals by the object;
determine a plurality of second ranges to the object using a plurality of second return signals from reflection of the plurality of second signals by the object; and
select a first range of the plurality of first ranges that matches a second range of the plurality of second ranges by comparing each first range of the plurality of first ranges with each second range of the plurality of second ranges.