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The conventional phased array cannot effectively suppress the interferences that have the same direction angle but different ranges of the targets. To overcome this disadvantage, frequency diverse array (FDA) is proposed in recent years. However, FDA beampattern is time-variant, which makes targets illuminated only in a very short duration and causes poor detectability of targets. This letter presents...
Micro-Doppler signatures can be regarded as a unique signature of an object with movements and provide additional information for classification, recognition and identification of the object. In this paper, we concentrate on radar micro-Doppler signature extraction from high speed targets with micro-motions. Compensation of range migration brought by high speed, translation Doppler shift adjustment,...
In order to meet the needs of radar target recognition (RTR), a method using some invariant properties of the polarization scattering matrix (IPPSM) is presented. A simulated cone model of missile is used to test in microwave darkroom experiments, a new IPPSM is first presented, its physical characteristic is also given. All the IPPSMs are analyzed, the experiment results imply that Determinant |Δ|,...
In order to meet the needs of radar target recognition (RTR), a method using some invariant properties of the polarization scattering matrix (IPPSM) is presented. A simulated cone model of missile is used to test in microwave darkroom experiments, a new IPPSM is first presented, its physical characteristic is also given. All the IPPSMs are analyzed, the experiment results imply that Determinant|Δ|,...
Microwave propagation is adversely affected by evaporation duct, which can occur as often as 85% of the time in the sea of the world. Evaporation duct propagation is the abnormal bending and diversion of electromagnetic radiation from the intended paths, that resulting in the problems of extended propagation of microwave signals well beyond the radio horizon, high probability of intercept, measurement...
A kind of EWNI method is proposed in this paper. It can decrease the detectable SCR of small targets contrasted with normal noncoherent integration. To suppress false alarms, MHT method is adopted to reach the le-6 Pfa. The scheme proposed in this paper is suitable for S band marine surveillance radar to detect small targets in sea clutter.
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