Radar echo processing with partitioned de-ramp
| Patent Number: | 8,400,349 |
| Issued: | 3/19/2013 |
| Official Filing: | View the Complete Patent |
| Abstract: | The spurious-free dynamic range of a wideband radar system is increased by apportioning de-ramp processing across analog and digital processing domains. A chirp rate offset is applied between the received waveform and the reference waveform that is used for downconversion to the intermediate frequency (IF) range. The chirp rate offset results in a residual chirp in the IF signal prior to digitization. After digitization, the residual IF chirp is removed with digital signal processing. |
| Filed: | 7/27/2010 |
| Application Number: | 12/844,576 |
| Government Interests: | STATEMENT OF GOVERNMENT INTEREST 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. |