| 1. | Trial rules for making sea chart
海图作业试行规则 |
| 2. | Before staring on a sea voyage , prudent navigators learn the sea charts , study the sailing directions , and memorize lighthouse * * * s to prepare themselves for any conditions they might encounter
谨慎的航海员在出航前，会研究航向，记录的灯塔的位置，以便对各种可能出现的情况做到有备无患。 |
| 3. | Before staring on a sea voyage , prudent navigators learn the sea charts , study the sailing directions , and memorize lighthouse places to prepare themselves for any conditions they might encounter
谨慎的航海员在出航前，会研究航向，记录的灯塔的位置，以便对各种可能出现的情况做到有备无患。 |
| 4. | Before staring on a sea voyage , prudent navigators learn the sea charts , study the sailing directions , and memorize lighthouse locations to prepare themselves for any conditions they might encounter
谨慎的航海员在出航前，会研究航向，记录的灯塔的位置，以便对各种可能出现的情况做到有备无患。 |
| 5. | Before starting on a sea voyage , prudent navigators learn the sea charts , study the sailing directions , and memorize lighthouse locations to prepare themselves for any conditions they might encounter
谨慎的航海员在出航前，会研究航向，记录的灯塔的位置，以便对各种可能出现的情况做到有备无患。 |
| 6. | Before staring on a sea voyage , prudent navigators learn the sea charts , study the sailing directions , and memorize lighthouse locations to prepare themselves for any conditions they might encounter
小心注意危险和风险和危险性的航海员在出航前，会研究航向，记录的灯塔的位置，以便对各种怀疑也许能够涌现的状况做到有备无患。 |
| 7. | Initial coastline sampling data , racon position data and sart position data are acquired from sea chart by digitizer . all of the initial data are saved with predefined data structure in data files
雷达回波中的海岸线、雷康和sart的原始数据是通过数字化仪从海图中采样获取的，获取后的数据按照预先设计好的数据结构保存在了特定类型的文档中。 |
| 8. | The main purpose of seafloor surveying is to obtain digital sea charts , which are developed by means of mosaic technique under the constraints of hydrographic surveying principles . therefore , mosaic technique is of fundamental importance in surveying processes
该系统的最终成果体现就是得到符合海道测量规范的数字地理海图和三维地形图，可见拼图技术在整个系统中具有极其重要的地位。 |
| 9. | On base of the theory studied , the author developed a package of applied mosaicking software , using microsoft visual c + + 6 . 0 and opengl graphic techniques . the software was tested with field trial data of h / hcs - 017 . digital sea charts generated by the software are satisfactory and meet the hydrographic surveying principles
在理论研究的基础上，本文利用visualc + + 6 . 0语言和opengl图形编程技术，开发出一套适用于多波束测深数据的拼图软件，可用于h hcs - 017型条带测深仪数字海图的生成。 |
| 10. | For displaying the initial date aquired from sea chart correctly in three different display modes ( relative head up motion , relative north up motion , true north up motion ) , a series of coordinate conversion are necessary . in the second chapter , data structure and various coordinates conversion are discussed in details
要使从海图录入的原始数据能够在3种不同的显示方式(船首向上的相对运动显示方式、北向上的相对运动显示方式和北向上真运动显示方式)下正确的显示出来，必然要在几个坐标系(图板坐标系、屏幕坐标系、平面直角坐标系和地理坐标系)中进行一系列的坐标变换。 |
