US 11,953,584 B2
Three-dimensional location estimation using multiplicative processing of sensor measurements
Dayalan P. Kasilingam, South Dartmouth, MA (US); Matthew J. Curtis, Millbury, MA (US); and Murilo Souza Silva, Jr., Holden, MA (US)
Assigned to University of Massachusetts, Boston, MA (US)
Appl. No. 17/257,539
Filed by University of Massachusetts, Boston, MA (US); Matthew J. Curtis, Millbury, MA (US); and Murilo Souza Silva, Jr., Holden, MA (US)
PCT Filed Jul. 3, 2019, PCT No. PCT/US2019/040609
§ 371(c)(1), (2) Date Dec. 31, 2020,
PCT Pub. No. WO2020/010257, PCT Pub. Date Jan. 9, 2020.
Claims priority of provisional application 62/694,778, filed on Jul. 6, 2018.
Prior Publication US 2021/0364621 A1, Nov. 25, 2021
Int. Cl. G01S 13/42 (2006.01); G01S 3/74 (2006.01); G01S 7/292 (2006.01); G01S 7/41 (2006.01)
CPC G01S 13/42 (2013.01) [G01S 3/74 (2013.01); G01S 7/2925 (2013.01); G01S 7/2926 (2013.01); G01S 7/41 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising,
receiving, from an analog to digital converter, a series of measurements representing frequency samples and spatial samples corresponding to signals obtained from a sensor array, the signals associated with one or more objects in motion that are detected by the sensor array;
generating a plurality of factors by projecting the series of measurements over a plurality of steering vectors corresponding to a range of values of a characteristic associated with the one or more objects, wherein each factor of the plurality of factors corresponds to a measurement of the series of measurements and is weighted by a complex weight corresponding to a factorized polynomial;
combining the plurality of factors to obtain a plurality of values; and
identifying the characteristic associated with the one or more objects detected by the sensor array based on the plurality of values.