| 摘要 |
PROBLEM TO BE SOLVED: To generates accurate synchronizing signal even when a modulation signal is unclear and estimate the modulated signal without influenced by the moderation system gain change, and an error factor. SOLUTION: A delay part 102 delays the received power of a received signal for a fixed time, a difference operating part 103 operates the difference between the received power and the delayed delay received power, operated results cumulatively added by an adding part 104 are stored in a storing part while changing storage destinations in every fixed interval, a retrieving part 108 retrieves a place corresponding to a specified condition in stored information, and a synchronizing signal generating part 109 generates a synchronizing signal corresponding to the retrieval place. Thus, synchronous timing being suitable to detection can be generated from a received signal, and synchronous capture can be performed with high accuracy without depending on a modulation system. |
