文中设计了一种利用通道编码进行全极化信息获取的雷达系统。该系统突破了传统极化雷达不同极化信号需通过各自对应的数字接收通道进行模数变换的思路,使用通道编码技术将来自不同天线单元的不同极化信号进行编码调制,使之能够使用单一数字通道采样,并在数字域对不同极化信号进行高保真恢复,从而合成任意极化、任意指向的雷达接收波束。分析结果表明:该系统解决了多极化雷达数字接收通道数量多、设计制造成本高的问题,促进了极化信息在雷达中的普遍应用,在不增加成本和系统规模的基础上,提升了雷达在极化域的灵活性,具有广泛的应用前景。

A radar system that utilizes channel coding technology for obtaining full polarization information is designed in this paper. The proposed system breaks through the traditional route that different polarization signals of multi-polarized radar need to be analogto-digital converted through their own corresponding digital receiving channels, uses a single digital channel for sampling different polarization signals. The system can recover signals with high-fidelity in the digital domain and synthesize receiving signals with any polarizations and any directions. The analysis results show that the system can solve the problem of a large number of digital reception channels and high design and manufacturing costs for polarimetric radars. With almost no cost and system scale increase, the proposed system improves the flexibility of radar in the polarization domain, which has widespread application prospects.

TN958.92