The invention relates to the technical field of pulse acquisition, in particular to a high-speed ADC (
Analog to Digital Converter) and FPGA (
Field Programmable Gate Array) coordinated extremely-narrow pulse
signal acquisition
system, which comprises a phase identification monitoring module, a phase lock reference updating module, a sampling permission control module, a prohibition feedback identification module and a synchronous trigger adjustment module. According to the method, a beat tolerance judgment mechanism is introduced, hyper-bound
phase deviation trend statistics and
frequency vector extraction are combined, beat correction is carried out by utilizing a directional hopping cumulant and a period adjustment amount, a sampling permission judgment and keeping window alignment mechanism is introduced in a multi-frame period, and a two-way judgment means of a sampling starting trigger value is adopted, so that the beat tolerance of the multi-frame period is judged. And meanwhile, centralized extraction and frequency
directivity statistics are carried out on the hopping direction in the sampling prohibition
time sequence, the synchronous mismatch trend is distinguished, and the initial beat position is adjusted, so that the
time domain characteristics of the narrow
pulse waveform are kept continuous, the edge response is prevented from deviation, the trigger structure is stable and reliable, and the overall sampling judgment is more accurate and efficient.