Digital demodulator for wide bandwidth SAR
| Autor: | J.H. Jorgensen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2000 |
| Předmět: |
Synthetic aperture radar
Computer science Pulse-Doppler radar Local oscillator Bandwidth (signal processing) Synchronizing Quadrature (mathematics) law.invention Continuous-wave radar Inverse synthetic aperture radar Sampling (signal processing) Intermediate frequency law Radar imaging Electronic engineering Demodulation Radar Remote sensing Communication channel |
| Zdroj: | Jørgensen, J H 2000, Digital demodulator for wide bandwidth SAR . in Proceedings. IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium, 2000. . vol. 5, IEEE, IEEE 2000 International Geoscience and Remote Sensing Symposium, Honolulu, Hawaii, United States, 24/07/2000 . https://doi.org/10.1109/IGARSS.2000.858378 |
| DOI: | 10.1109/IGARSS.2000.858378 |
| Popis: | A novel approach to the design of efficient digital quadrature demodulators for wide bandwidth SAR systems is described. Efficiency is obtained by setting the intermediate frequency to 1/4 the ADC sampling frequency. One channel is made filter-free by synchronizing the local oscillator with the output decimator. The filter required by the other channel is optimized through global search using the system level performance metrics integrated sidelobe level ratio (ISLR) and peak sidelobe level ratio (PSLR). |
| Databáze: | OpenAIRE |
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