Method for range ambiguity suppression based on multi-degree-of-freedom frequency modulation signal
US11187797B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 25, 2019 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Feb 15, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a method and an apparatus for range ambiguity suppression based on orthogonal nonlinear frequency modulation (NLFM) waveforms. The method includes that: according to transmitted orthogonal NLFM signals, a waveform sequence of the transmitted signals corresponding to an obtained echo signal is determined; a set of range matched filters is constructed according to the waveform sequence and the orthogonal NLFM signals; range compression is performed on the echo signal by using the set of range matched filters to obtain range-compressed data; and synthetic aperture radar (SAR) imaging is performed according to the range-compressed data, to obtain an imaging result, and the imaging result is outputted. A non-transitory computer-readable storage medium is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.