扩频雷达探测一阶海洋回波

扩频雷达探测一阶海洋回波 SPREAD SPECTRUM SOUNDING FOR FIRST ORDER SEA ECHO 文必洋 Wen Biyang 1 first-author 吴世才 Wu Shicai 1 杨子杰 Yang Zijie 1 侯杰昌 Hou Jiechang 1 武汉大学电子信息学学院 武汉大学电子信息学学院 College of Electronic Information, Wuhan University College of Electronic Information, Wuhan University 利用扩频通信良好的抗干扰性和低功率谱密度下工作的特点，本文把扩频技术引入高频海洋探测雷达来探测海洋一阶回波，研究结果表明，该技术对回波质量无不良影响，同时可降低雷达发射功率，增加雷达探测距离． The ocean echo of the HF radar decreases rapidly because of absorption of the HF electromagnetic waves by the seawater. Thus the detecting range of the HF pulse modulation ocean surface radar is badly limited. Increasing the tranmitting power can promote the detecting range in some extent. The high anti interference property of the spread spectrum system will improve the existed HF radar in promoteing detective range and decreasing the transmitting power. 高频雷达 扩频技术 一阶海洋回波 HF radar spread spectrum first order sea echo P715.7 国家863计划资助 1999-01-01 2021-04-01 1