Doppler-tolerant NLFM Radar Signal Synthesis Method
| Autor: | Hubert Milczarek, Adam Kawalec, Czeslaw Lesnik |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
Attenuation 020208 electrical & electronic engineering Doppler radar 0211 other engineering and technologies 02 engineering and technology Interference (wave propagation) Signal Instantaneous phase law.invention Amplitude modulation symbols.namesake law 0202 electrical engineering electronic engineering information engineering symbols Electronic engineering Waveform Radar Secondary surveillance radar Doppler effect 021101 geological & geomatics engineering |
| Zdroj: | 2020 IEEE Radar Conference (RadarConf20). |
| DOI: | 10.1109/radarconf2043947.2020.9266657 |
| Popis: | The problem of designing a radar NLFM waveform with reduced Doppler sensitivity is examined in this paper. A presented novel approach utilizes a U-shaped instantaneous phase functions to determine a signal time-frequency structure combined with optimization framework aimed to reach compromise between sidelobe attenuation and range resolution with additional requirement on Doppler tolerance. Spectral efficiency of the signal is also examined and accounted for. This aspect has been rarely discussed to date, whereas it needs to be considered in practical implementation due to the limits arising from band allocation and interference mitigation point. The simulation results show that the signals synthesized with proposed method reach sidelobes level as low as −50 dB without any amplitude modulation. Finally, improved Doppler tolerance makes proposed waveform attractive for surveillance radar. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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