| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a signal processor which suppresses a range sidelobe without deteriorating an SN ratio. <P>SOLUTION: A Fourier transform unit 141 transforms an inputted transmission signal on a time axis into a signal on a frequency axis and outputs a spectrum of the transmission signal. A Fourier transform unit 142 transforms an inputted desired signal on the time axis into a signal on the frequency axis and outputs a spectrum of the desired signal. The desired signal is squared to be transformed into an autocorrelation spectrum (power spectrum). A divider 145 divides the autocorrelation spectrum of the desired signal outputted from a multiplier 144 by the transmission signal spectrum, i.e., an output signal of the Fourier transform unit 141. The signal resulting from the division is taken as a reference signal spectrum and is transformed into a signal on the time axis by an inverse Fourier transform unit 146. This reference signal on the time axis is taken as a filter coefficient of an FIR filter 147. <P>COPYRIGHT: (C)2012,JPO&INPIT |
