| 摘要 |
A multichannel coherent receiver employing multiple delay lines in series or a tapped delay line into which a received signal band is introduced. The signal band at each tap or increment of delay is mixed with individual related frequencies and the product from the mixers summed and further mixed with the output of a swept oscillator. The composite delayed signal band is introduced into a bank of dispersive filters followed by means for deriving in-phase and quadrature components. Signals contained within the signal band may then be detected resulting in coherent channelization, improved frequency resolution and full time coverage sampling.
|
