网络流媒体播放控件能很大程度地减轻程序开发人员的负担,编程人员只需简单地设置控件的属性就可轻松完成视频的实时播放.基于x264解码代码,在Visual Studio 2008平台下,考虑实际网络状况以及代码复杂性等问题,利用双缓冲循环队列、管道通信等技术,构建了一个完整的H.264流媒体播放路径,整合成一个参数可配置、功能丰富的流媒体播放控件.该控件结构清晰,配置灵活,功能丰富,使用方便.
For the recognition of high-resolution range profile （HRRP） in radar, the weighted HRRP can reduce the instability of range cells caused by the attitude change of targets. A novel approach is proposed to optimize the weighted HRRP. In the approach, the separability of weighted HRRPs in different targets is measured by de- signing an objective function, and the weighted coefficients are computed by using the gradient descent method, thus enhancing the influence of stable range cells. Simulation results based on five aircraft models show that the approach can effectively optimize the weighted HRRP and improve the recognition accuracy.
