LandStar 7

May 31, 2021

1.Add Dutch local coordinates,support GTX geoid file.
2.Support GDM export.
3.Support GNSS reciever i73.
4.Support dual-frequency depth sounder Hydrolite DFX.
5.Optimize the function of road stakeout.
6.Optimize SD card read & write.
7.Optimize the surface fitting method.
8.Fixed some other known bugs.