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The application of stepped frequency waveform in synthetic aperture radar (SAR) can greatly reduce the hardware requirements, while obtaining high range resolution. However, the range difference within a single stepped-frequency burst may cause the range profile shift and defocus, which seriously affect the quality of SAR image. Traditional compensation methods for this problem are rather complicated...
Avian detection is very important for the security and development of human's aviation as well as the development of avian ecology and the prevention from avian influenza. In this paper, a new method of avian micro-Doppler feature extraction from spectrogram on the range-slow time plane based on frequency-stepped chirp ISAR is proposed. In the method, the micro-Doppler outline can be obtained to extract...
ISAR based on frequency-stepped chirp signal has greater capability of anti-jamming than that of the conventional radar due to its peculiar characteristic. Frequency-stepped chirp signal can achieve total large bandwidth while maintaining narrow instantaneous bandwidth, thus reducing the complexity of radar systems. A new method of jamming the ISAR imaging is proposed, where the received signal is...
It is quite significant in the military field that an effective jamming can be executed against inverse synthetic aperture radar (ISAR) successfully. However, ISAR has a well anti-jamming capability, which is stronger than that of conventional radar due to its special imaging approach. Camouflage jamming with many particular advantages becomes a very effective and important jamming approach nowadays...
Surveillance for bird is quite significant for security and development of humanpsilas aviation. ISAR imaging for bird with frequency-stepped chirp high-resolution radar is a novel and vital approach. However, the quality of image could be deteriorated by micro-Doppler effects resulting from birdpsilas flapping wings, and even target can not be identified successfully by radar. It is extraordinarily...
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