US 12,436,250 B2
Navigation systems and methods for an autonomous device
Shai Abramson, Pardesiya (IL); Christopher J. Churavy, Lakewood, OH (US); Ido Ikar, Tel Mond (IL); and Ayala Raanan, Raanana (IL)
Assigned to MTD PRODUCTS INC, Valley City, OH (US)
Filed by MTD PRODUCTS INC, Valley City, OH (US)
Filed on Jul. 22, 2022, as Appl. No. 17/871,333.
Claims priority of provisional application 63/225,051, filed on Jul. 23, 2021.
Prior Publication US 2023/0021697 A1, Jan. 26, 2023
Int. Cl. G01S 11/06 (2006.01); G05D 1/00 (2024.01); H04B 17/318 (2015.01); H04W 4/02 (2018.01); H04W 4/80 (2018.01)
CPC G01S 11/06 (2013.01) [G05D 1/00 (2013.01); G05D 1/0088 (2013.01); H04B 17/318 (2015.01); H04W 4/025 (2013.01); H04W 4/80 (2018.02)] 25 Claims
OG exemplary drawing
 
1. A method for proximity determination, comprising:
receiving an RF signal transmitted from a target location, the receiving performed by an antenna of an autonomous moving device;
extracting received signal strength indicator (RSSI) values by processing the received RF signal, wherein the autonomous moving device comprises a memory in which extracted RSSI values are stored;
receiving distance measurements provided by a sensor associated with the autonomous moving device and storing the distance measurements in the memory of the autonomous moving device;
correlating the extracted RSSI values with the distance measurements to obtain a proximity value; and
moving the autonomous moving device to the target location based at least in part on the extracted RSSI values.