source:Industry News release time:2023-07-21 Hits: Popular:realtime gps tracker online
The baseline vector obtained from GPS relative positioning can be adjusted to obtain high-precision geodetic elevation. If one or more points in the network have precise geodetic elevation of WGS-84 Local tangent plane coordinates, the WGS-84 geodetic elevation of each GPS point can be obtained after GPS network adjustment.
The baseline vector obtained from GPS relative positioning can be adjusted to obtain high-precision geodetic elevation. If one or more points in the network have precise geodetic elevation of WGS-84 Local tangent plane coordinates, the WGS-84 geodetic elevation of each GPS point can be obtained after GPS network adjustment. The relative accuracy of GPS relative positioning elevation can generally reach (2-3) × In terms of absolute accuracy, for baseline edges below 10km, it can reach several centimeters. If some error elimination measures are adopted during observation and calculation, the accuracy will be better than ± 1 cm. However, in practical application, the normal elevation system is generally used for ground points. Therefore, the relationship between the geodetic elevation of GPS points and the normal elevation should be found out, and a certain model should be used for conversion.
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