SIGNAL DETECTION DEVICE AND SIGNAL DETECTION METHOD

摘要

Provided is a signal detection device, wherein signal detection precision can be maintained even when fluctuations in the power level are great. In this signal detection device (100), a delaying unit (101) delays a first distributed signal or a second distributed signal distributed from a received signal for a period of time of T1 to form a first multiplication signal, and delays the first distributed signal or the second distributed signal for a period of time of T2 (T2 > T1) to form a second multiplication signal. An integrator (104) calculates a first correlation value by integrating the result of multiplying the first distributed signal and the first multiplication signal. An integrator (105) calculates a second correlation value by integrating the result of multiplying the second distributed signal and the second multiplication signal. An evaluation unit (108) evaluates whether the signal to be detected, which is a periodic signal with a period of T1 or a periodic signal with a period of T2, exists or not, on the basis of the first correlation value and the second correlation value.