中文摘要：

鸟类目标散射特性研究是雷达探鸟系统探测性能分析的理论基础。基于此，首先进行了鸟类目标散射特性分析，采用实验数据构造的理论统计模型，估计出单只鸟和鸟群的雷达散射截面（RCS）量级范围。然后，详细介绍了雷达探鸟实验系统的系统结构、探测性能和飞鸟目标识别算法。最后，基于外场实验获取的雷达探鸟图像序列提取出飞鸟目标轨迹与相关信息，验证了雷达探鸟的可行性，并通过对不同实验结果的分析提出了抑制虚警和漏警的算法改进方向。

英文摘要：

The study of scattering characteristics of bird targets is the theoretical foundation for the performance analysis of an avian radar system. This article first analyzes the scattering characteristics of bird targets by means of a statistical model based on experimental measurements to estimate the radar cross section （RCS） order-of-magnitude of a single bird and a flock of birds. Then it introduces in detail the system architecture, detection performance and algorithm of the avian radar experimental system for flying bird detection. Finally, flying bird target trails and correlative information are extracted from avian radar image sequences collected during outfield experiments, which verify the feasibility of bird detection with radar, and some prospect of algorithm improvement for reducing false alarm and missing alarm is proposed after an analysis of different experimental results.