Real-time detection and parameter estimation of radar signals in time varying noisy environments
US12422522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Apr 7, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/354
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Radar signal detection and parameter estimation is central in passive surveillance systems, providing inputs for many information processing modules in order to detect, localize, indentify and intercept hostile targets. The proposed method for detecting radar signals and estimating their intra-pulse parameters in time-varying noisy environments consists of several stages: magnitude-squared envelopes calculation, adaptive noise floor estimation, detection statistics calculation, rising edge detection, time of arrival estimation, falling edge detection, time of departure estimation, pulse width estimation, amplitude estimation and center frequency and bandwidth estimation. Estimated intra-pulse parameters are wrapped into pulse descriptor words (PDWs) for information processing tasks, where each PDW consists of time of arrival, time of departure, pulse width, pulse amplitude, center frequency, signal bandwidth, noise floor level and additional useful information. The method is sequential, implemented in hardware platforms for real-time surveillance applications. The proposed method yielded much better performance than classical threshold-based edge (TED) detection methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.