To address the problem and reduce the risk wherein a ship‐based cross‐eye jammer could set a protected ship as a target, an unmanned platform equipped with a jammer is proposed to be used. However, the jamming situation violates the original cross‐eye jamming conditions and introduces some new elements. In this regard, the impact of outboard cross‐eye jamming in the presence of ship echoes is derived in detail. The analysis shows that the outboard cross‐eye jamming combines the characteristics of outboard active and traditional cross‐eye jamming gains. It can reduce the standard cross‐eye jamming requirement of the jamming‐to‐signal ratio (JSR) and improve the jamming effect. The phase difference of a cross‐eye jammer can be controlled at 0° or 180° to obtain a larger angular positioning deviation based on the JSR requirement, thus providing a theoretical basis for applications of unmanned outboard cross‐eye jamming.
Radar scattering characteristics is an important researching content of military target. It is always very difficult to deal with simulation of electromagnetism field , especially to analyze the monostatic RCS characteristics. Aiming at a kind of complex & electrically large size target , this paper reasonably estimated its multi-point monostatic RCS using smaller resources by adopting the electromagnetic calculation software FEKO. This work succeeded on the analysis and optimization choice to typical high frequency algorithm theory, combined with the prediction precision and efficiency .This project has an important value in engineering application.
Sea clutter scattering is analyzed in the paper. The stochastic differential equations are given for the physical quality of sea clutter. The diffusion process model is built by using Ito formula. These processes are represented as Ito stochastic differential equations, which enables the identificating their stochastic volatilities with certain free functions that serve as calibrating the model. Finally the correlation detection method is used to detect weak signal from sea clutter.
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