航行雷达

针对船用航行数据记录仪雷达图像无损压缩问题，提出了将整数小波和改进SPECK相融合的算法。

In view of the problem of lossless compression for VDR radar image , an algorithm combining the integer wavelet transform with improved SPECK is presented .

在该飞机起飞并开始飞越大西洋时，其航行灯和雷达收发机仍处于关闭状态。

Its lights and transponder remained off as it took off and started to fly over the Atlantic .

但是其生成的回波图像只是本船静止时的雷达回波图像，本课题拟在此雷达传感器建模的基础上实现本船航行时的雷达动态回波图像模拟。

But the radar echo image just only is anchored , this paper aims to simulate the radar echo image based radar sensor modeling when ship underway .

英航和韩亚航空的事故都是发生在着陆前的一小段时间里，而马航失事客机的信号在航行不久便在雷达探测仪上消失了。

Both the BA and Asiana accidents occurred shortly before landing , while the Malaysia airlines plane disappeared off the radar during the early stages of the trip .