Narrow-spectrum high-power microwave signal instantaneous acquisition and processing system and method

The invention discloses a narrow-spectrum high-power microwave signal instantaneous acquisition and processing system and method. The system comprises an ultra-high-speed single-bit receiving module and a multi-channel folding receiving module. The ultra-high-speed single-bit receiving module comprises a directional coupler, a limiting amplifier, an attenuator, a single-bit ADC and a first FPGA processor which are connected in sequence. A fast response detector, a signal conditioning circuit and a multi-bit ADC which are connected in sequence are further arranged between the directional coupler and the first FPGA processor. The multi-channel folding receiving module comprises a power divider, a plurality of groups of undersampling circuits arranged in parallel and a second FPGA processor which are connected in sequence; each group of undersampling circuit comprises an amplifier, a sampling holder and a multi-bit ADC which are connected in sequence; and the ultra-high-speed single-bit receiving module is conne