Phase doppler radar
US11391832B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2018 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | May 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/53
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A phase Doppler radar system may comprise a pulse Doppler receiver/transmitter (R/T) subsystem coupled with a processing subsystem. The system may determine target velocity and target detection events by collecting pulses from the pulse Doppler R/T subsystem, determine an undifferentiated phase of each of the pulses, differentiate the pulses, and determine a differentiated phase of each of the pulses. The system may perform a linear fit of the differentiated phases of the pulses to produce a slope and an intercept. The system may determine a set of initial estimates of coefficients of a nonlinear fit equation. The system may perform iterations of a nonlinear least squares fit, beginning with the initial coefficient estimates, to produce a non-linear fit result. The system may determine a goodness-of-fit (GoF) statistic associated with the nonlinear fit result, and declare a detection event when the GoF is superior to a GoF statistic associated Gaussian noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.