| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a guide using a conventional synthetic bandwidth method detects and tracks a target signal by transmitting a radio wave toward a target and receiving the signal directly reflected from the target, but since a processing time of a synthetic bandwidth processing part is required to be long, degradation of S/N and reduction of distance accuracy are generated by the influence of a flight distance within the processing time.SOLUTION: Transmittance frequency signals formed by a plurality of DDS circuits for performing pulse modulation at different frequencies are simultaneously transmitted, and received signals corresponding to the respective transmittance frequency signals are synthesized when received. Thereby, since a processing time required to obtain the same bandwidth as conventional is reduced, and degradation of S/N and reduction of distance accuracy can be prevented when a guide tracks a target, guidance performance is improved. |
