Datums: WGS84 vs NAD83 скачать в хорошем качестве

Datums: WGS84 vs NAD83

Are you a Bad Elf Flex user switching between standard and extreme mode? If so, you’re probably collecting coordinates in differing datums and need a way to transform points between them. American users connected to a RTK network via NTRIP for survey grade accuracy will nearly always be collecting points in NAD83(2011), while essentially every other latitude longitude coordinate pair will be in WGS84. How to deal with this? We recommend using the horizontal time displacement tool available from the NGS. Just convert your coordinates to a .csv file, choose the input and output datum, input the desired epoch years, which is always 2010 for NAD83(2011), and the date of the point collection for WGS84. Calculate the shift, and add the resulting points to your GIS. NGS HTDP tool (Interactive Computation 4 with positions specified multiple points in a file in Lat-Lon-Ht format is a good place to start): https://geodesy.noaa.gov/TOOLS/Htdp/H... NGS NCAT tool (Use for transformations within the NAD83(xxxx) datum realizations to state plane/UTM/different realization etc.): https://geodesy.noaa.gov/NCAT/