| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce loss caused by incoherent integration in signal processing.SOLUTION: An A/D converter 1 performs A/D conversion of a receiving signal and generates a digital signal. An FFT part 2 divides the digital signal generated by the A/D converter 1 into sections of each predetermined time, performs fast Fourier transformation in each section and generates section frequency data of a frequency region. A multiplication part 3 multiplies a phase difference in a frequency region corresponding to time delay determined in each section of the receiving signal by the section frequency data and generates corrected section frequency data. An addition part 6 adds absolute values of the corrected section frequency data for predetermined sections in each frequency to calculate corrected frequency data.</p> |
