Ladar range rate estimation using pulse frequency shift
US10557927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2017 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Feb 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/894
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for forming a range rate estimate for a target with a laser detection and ranging system including a laser transmitter and an array detector. The method includes: transmitting a plurality of laser pulses at a pulse repetition frequency; forming a one dimensional time series array corresponding to a time record of ladar return photons detected with the array detector; fitting the time series array with a superposition of a sine and a cosine of an initial value of a tentative frequency; iteratively fitting the time series array with a superposition of a sine and a cosine of the tentative frequency, and adjusting the tentative frequency until a completion criterion is satisfied at a final value of the tentative frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.