Apodization of spurs in radar receivers using multi-channel processing
| DWPI Title: Method for facilitating apodization of spurs in radar receivers using multi-channel processing, involves labeling pixel as being pixel identifying target in response to energy magnitude of pixel being greater than threshold energy |
| Abstract: The various technologies presented herein relate to identification and mitigation of spurious energies or signals (aka “spurs”) in radar imaging. Spurious energy in received radar data can be a consequence of non-ideal component and circuit behavior. Such behavior can result from I/Q imbalance, nonlinear component behavior, additive interference (e.g. cross-talk, etc.), etc. The manifestation of the spurious energy in a radar image (e.g., a range-Doppler map) can be influenced by appropriate pulse-to-pulse phase modulation. Comparing multiple images which have been processed using the same data but of different signal paths and modulations enables identification of undesired spurs, with subsequent cropping or apodization of the undesired spurs from a radar image. Spurs can be identified by comparison with a threshold energy. Removal of an undesired spur enables enhanced identification of true targets in a radar image. |
| Use: Method for facilitating apodization of spurs in radar receivers using multi-channel processing. |
| Advantage: The method enables utilizing a circuitry to minimize an occurrence of spurs in a radar system, thus improving performance, accuracy, reliability, and/or general utility of the radar system. |
| Novelty: The method involves comparing first energy magnitude of a first pixel with threshold energy. The first pixel is labeled as being a pixel identifying a target in response to the magnitude of the first pixel being greater than the threshold energy, where the first pixel is formed from a second pixel in a first radar image and a third pixel in a second radar image, and the second pixel and the third pixel are co-located in a composite radar image (180), and the magnitude of the first pixel is formed from a combination of a second energy of the second pixel and a third energy of the third pixel. |
| Filed: 10/18/2017 |
| Application Number: US15786935A |
| Tech ID: SD 13077.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Data from Derwent World Patents Index, provided by Clarivate All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |