An ultrahigh-resolution continuous wave synthetic aperture radar with photonic-assisted signal generation and dechirp processing

R Li, W Li, Y Dong, B Wang, Z Wen… - 2020 17th European …, 2021 - ieeexplore.ieee.org
R Li, W Li, Y Dong, B Wang, Z Wen, Y Luan, Z Yang, X Yang, J Yang, W Sun, L Chen, Z Mo…
2020 17th European Radar Conference (EuRAD), 2021ieeexplore.ieee.org
A ultrahigh-resolution continuous wave (CW) synthetic aperture radar (SAR) is developed
and demonstrated. In the transmitter, photonic frequency-quadruple is used to generate a
linearly-frequency-modulated (LFM) radar signal; while in the receiver, photonic dechirp
processing is employed to receive the reflection signal. The presented LFM-CW SAR
operates in Ku band with a bandwidth of 5000 MHz and is evaluated through a series of
imaging tests. The results show photonic technologies are able to handle of transmission …
A ultrahigh-resolution continuous wave (CW) synthetic aperture radar (SAR) is developed and demonstrated. In the transmitter, photonic frequency-quadruple is used to generate a linearly-frequency-modulated (LFM) radar signal; while in the receiver, photonic dechirp processing is employed to receive the reflection signal. The presented LFM-CW SAR operates in Ku band with a bandwidth of 5000 MHz and is evaluated through a series of imaging tests. The results show photonic technologies are able to handle of transmission and reception of very large bandwidth for ultrahigh-resolution imaging radar.
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