| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of decrease in a targeted detection performances caused by reduction in electric power level of a received signal after having passed through a narrow-band filter in a situation where eclipses generate due to signals not being received in a pulse transmission interval in an existing pulse Doppler radar, in which an improved S/N ratio is improved using a narrow-band filter for a received signal and a received signal after having passed through the narrow-band filter becomes a sine wave with a Doppler frequency corresponding to a desired relative rate.SOLUTION: It becomes possible to restrain degradation in detection performances to a target where transmitted signals and received signals overlap, by sampling the received signals at shorter intervals than a transmission pulse width without using a narrow-band filter for reflecting signals from the target. Further, it also becomes possible to avoid a situation where transmitted pulse signals and targeted received pulse signals all overlap with each other by feeding a desired relative rate and a distance in PRI back to the sources of the transmitted signals.SELECTED DRAWING: Figure 1 |
