| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal analyzer which estimates the number of sequences correctly even if there are a plurality of periodic signal sequences of identical incoming time interval. SOLUTION: In order to estimate the number of sequences and the incoming time interval of the period signal of radiation signals based on the observation data including the time of a predetermined timing indicative of the reception timing of a plurality of radiation signals, the analysis range of radiation signal incoming time interval and each width or the numbers when it is divided into a plurality of evaluation value subdivision sections and count value subdivision sections are set (6), the incoming time difference of radiation signal is calculated from the time of a predetermined timing (1), corresponding evaluation value subdivision section and count value subdivision section are selected from the incoming time difference (2), an accumulation evaluation value is calculated by calculating an evaluation value from the incoming time difference and the time of a predetermined timing and then accumulating the evaluation value for every evaluation value subdivision section (3), a count value is calculated by counting the incoming time differences selected in a selected subdivision section for every count value subdivision section (4), and the number of sequences and the incoming time interval of the periodic radiation signals are estimated from the accumulation evaluation value and the count value (5). COPYRIGHT: (C)2009,JPO&INPIT
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