高频地波雷达波形参数设计

Waveform Parameters Design for Sea State Detecting HF Ground-Wave Radar

根据线性调频中断连续波 (FMICW)雷达原理 ,针对高频地波雷达探测海洋表面动力学要素的要求 ,给出了雷达信号数据采集与处理过程 ;分析了被压地波脉冲中断的雷达回波信号可以进行连续采样的原理 ;设计了无距离混迭和 Doppler频率混迭的 OSMAR2 0 0 0雷达工作参数 .该雷达主要技术指标为 :距离分辨率 2 .5 km ,最大探测距离 2 70 km ,时间分辨率 13m in,雷达工作比 0 .44 ,测速分辨率 2～ 3cm/ s.现场实验表明 。

HF ground wave radar OSMAR2000(Ocean State Measuring and Analyzing Radar Manufactured in 2000) system used to extract sea surface state parameters is a wide\|beam HF radar, which is based on frequency modulated interrupted continuouswave(FMICW) type waveform. This paper describes the radar data acquisition and data processing, and analyze the principles of continuous sampling of echo signals interrupted by the blank pulse. The designed waveform parameters are robust to the range and Doppler frequency aliasing. The main specifications are:2.5 km range resolution, 270 km detection range; 13 minutes time resolution, 0.44 duty factor, and 2\|3 cm/s velocity resolution. Field experimentation demonstrates the validity of the design.