| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the following problem: time is taken to gather all polarization data needed for polarization signal processing, and a processing result is therefore obtained only once for every several frames as a conventional polarization radar transmits and receives polarization by time-division switching, and therefore the output rate of guide signals when terminal guidance is low, and the guide accuracy of an airframe is reduced. <P>SOLUTION: Transmitted polarization (V transmission) is fixed during terminal guidance, and a feature amount is extracted from video signals of one-sided polarization (for example, VV, HV) received. The video signals of another one-sided polarization (for example, VV, HV) needed for polarization signal processing are estimated from the feature amount extracted and a video database stored during the first and middle guidance. Polarization signal processing is performed with the video signals (VV, HV) received and the video signals (HH, VH) estimated. Thus, polarization signal processing is performed by the one-flame video signals. Therefore, twice as many update rate as the conventional one is obtained and the guide accuracy of an airframe is improved. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
