Water depth data (main parameters), which was matching to model's grid structure, was obtained by using the function of GIS digital elevation model (DEM) to linear-interpolate the isobath of chart.
This system has realized the high precision real-time matching positioning about electronic chart and radar image in possession of high practical value.
本系统实现了较高精度的电子海图与雷达图像实时匹配定位，具备较高的实际应用价值。
3
A scheme of designing audio auto gain control system based on TDA7315 is introduced, the diagram of chip matching as well as the software flowing chart are also given.