An investigation on the improvement of the resolution of a radar target identification system is presented in this paper. Degradation\nof resolution is mainly due to influence factors associated with antennas, including the strong coupling between transmitting and\nreceiving antennas and the variation in the antenna response. A filtering technique was therefore introduced to mitigate the\nunderlying problem. In the technique, the antenna effects were filtered out of the total response backscattered from the objects\nin the radar target identification system. The short-time matrix pencil method (STMPM) was then employed to extract the poles\nfrom the backscattered response in order to identify the object. Simulation and experimentation examples are illustrated to\nconfirm the improvement of the resolution by filtering the antenna effects. The simulation and experimentation were divided\ninto several categories, that is, different antennas and differently shaped objects, in order to validate the advantage of filtering\nthe antenna effects. They were setup in order to demonstrate that the poles obtained from performing the STMPM without the\nfiltering technique were mainly because of the antenna rather than the object�s characteristic. The results showed that the\nresolution of the identification was significantly increased when performing pole extraction and filtering the antenna effects.
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