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A dual-band millimeter-wave cloud radar is studied in this paper. Firstly, the available frequencies for the dual-band operation are analyzed, including several atmospheric window, such as 94 GHz, 140 GHz and 220 GHz. Then, the equivalent radar cross section of the particles in cloud are studied, which is dependent on the particle' size and available frequencies. Based on the above analysis, 94 GHz...
In order to extract the precession frequency, which is an important feature parameter in ballistic missile target recognition, we first establish the dynamic Radar Cross Section (RCS) signal model for a conical ballistic missile warhead with precession motion. A homomorphic filter is designed to remove the scintillation effect in the RCS signal. Simulations show the practical usefulness of the proposed...
We establish the dynamic Radar Cross Section (RCS) signal model for a conical ballistic missile warhead with precession motion. Two Maximum Likelihood Estimation (MLE) approaches are presented for the estimation of the important missile precession frequency. In one method we approximate a log-normal multiplicative process by a Gaussian process. In the second method we assume zero additive noise. While...
Radar target signature is usually measured using step frequency radar system, in which the beam of antenna can not be changed. According to the need of the measurements, various beam width, various frequency band width and various beam scanning angle can be chosen. Digital beam forming technology can be applied to promote the measurements to a new level. Not only the desired main lobe can be got,...
Radar target signature is usually measured in near field using step frequency radar system, and Fourier-based methods are conventionally applied to signature processing, but bias lies between near field and far field. RCS is an important signature, which may be extrapolated by simple signal processing algorithm, some results are shown. The one-dimension downrange profiles are also researched based...
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