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Abstract
AbstractAiming at the problem that the azimuth echoes of forward‐looking scanning imaging are aliased and the angular information of different targets cannot be directly separated, resulting in low azimuth resolution, the authors propose a scanning imaging method based on azimuth modulation and pulse compression in this paper. Firstly, the coupling of slow‐time and scanning angle is utilised to transmit time‐varying azimuth‐modulated pulses while the beam is scanning, and phase demodulation is performed during the echo processing; then the azimuth pulse compression is used to accumulate effective power and obtain the azimuth information of different targets. The proposed method not only obtains high azimuth resolution of the forward‐looking area, but also has a simple processing process and good anti‐noise performance. Simulation and analysis demonstrate the effectiveness of the proposed method.
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