Impact of Synchronization Errors in Stretch Processing for Ultra-Wideband Bistatic Radar Imaging
- Resource Type
- Conference
- Authors
- Park, James; Raj, Raghu G.
- Source
- IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium, IGARSS 2023 - 2023 IEEE International. :356-359 Jul, 2023
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Geoscience
Signal Processing and Analysis
Phase noise
Image quality
Time-frequency analysis
Image resolution
Chirp
Imaging
Radar imaging
bistatic radar
synchronization
stretch processing
imaging
- Language
- ISSN
- 2153-7003
Impact of synchronization errors in stretch processing for ultra-wideband (UWB) bistatic radar imaging is presented through a simulation study. Synchronization errors including phase noise, chirp rate mismatch, time and frequency offsets are discussed and added in a bistatic system model for the analysis. To assess the impact of those errors on image processing, high range resolution profiles (HRRP) and range-Doppler images are generated using point scatterers. The analysis shows that time and frequency offsets cause migration of scattering responses in range window extent of stretch processing resulting in Doppler spread. Also, the chirp rate mismatch degrades the range resolution and the phase noise increases the noise floor of the image. These results demonstrate the manner in which synchronization errors in bistatic stretch processing systems degrade the overall bistatic image quality.