Searching for Pulsars with Phase Characteristics

We present a method by using the phase characteristics of radio observation data for pulsar search and candidate identification. The are relations between signal correction in frequency-domain, we regard it as new diagnostic characteristic. Based on characteristics, is presented: calculating DM (dispersion measure) -- frequency to select frequencies, then confirming candidates broadband signals. this method, performed test short M15 M71, which were observed Five-hundred-meter Aperture spherical Telescope (FAST), some Galactic Plane Pulsar Snapshot survey (GPPS) data. Results show that can get similar results PRESTO (PulsaR Exploration Search TOolkit) while having faster processing speed.