1、Inertial Explorer这款软件怎么导出txt或csv格式的轨迹文件?
答:https://mp.weixin.qq.com/s/Rtl_3YJjDQblyVPLXjAmhA。
问:软件需要一个EGM96-World.wpg格式的文件,就是IE这家公司特有的文件格式。我登录他们官网,发现没提供下载的地方。
官网的提示:Where does Waypoint get the geoids from?
It is important to keep in mind that Waypoint Products Group does not derive any of the geoid values provided with the software. Rather, the data has been acquired from various international or government agencies and been converted into a format (WPG) readable by Waypoint’s software. In the United States, for example, the Geoid96/Geoid99/Geoid03 files provided with the software are converted from data files provided by the National Geodetic Survey (NGS). The data contained by the EGM96 file, which covers the entire Earth, was provided by the joint effort of the National Aeronautics and Space Administration (NASA) and the National Imagery and Mapping Agency (NIMA).(Waypoint Products Group软件不提供大地水准面模型数据。数据来自国际或政府机构,并被转换为Waypoint软件可读的格式(WPG)。例如,在美国,Geoid96/Geoid99/Geoid03是从国家大地测量局(NGS)的数据文件转换而来的。EGM96文件包含整个地球的数据,由美国国家航空航天局(NASA)和国家测绘局(NIMA)共同提供。)
答:https://novatel.com/support/waypoint-support/waypoint-geoids 提供EGM96.wpg和EGM2008.wpg下载,见下图。
2、想咨询一下,目前国产的多波束图像声呐,可以对标blueview900的,有哪款?
答:blueview m900的关键参数:视场角130°,最大距离100m,波束垂直宽度12°,水平宽度1°
答:海鹰和宁波博海深衡有类似的产品。
国产海鹰前视声纳,型号是HY1672:
宁波博海深衡科技有限公司二维声纳BHQ-1200d/BHQ-750d,下面是BHQ-750d的技术参数
3、当地理论最低潮面与1985国家高程基准面的相对关系哪有?
答:查当地海图
4、如何用hypack处理内河湖泊的多波束数据?
答:参考这个网页:http://www.hydro-tech.cn/h-nd-41.html
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