A20 User Manual
45
Point position
1)Widely place is suggested because of good satellites signals, big buildings are not
allowed at the range of 10
~
15
in elevation mask.
2)Keep 200m away from high power WiFi object, e.g. radio, powerline etc.
3)It is better to be removed from the large water area, high building etc. to avoid or reduce
the effects of multipath.
4)The place for point position should be easy-going and also steady for further applications.
Reliability
1)Longer surveying time.
2)Repeated station setting is suggested.
3)Comfirm that one point should be involved at least 3 baselines.
4)The sides for every part of the network should not exceed 6.
Precision
1)Synchronous surveying is suggested in the adjacent points.
2)GPS network designing is suggested.
3)The sides for every part of network should not exceed 6.
4)High precision EDM instrument is recommended to use together with GPS receivers.
5)Leveling points should be equally spread in the district for better elevation fitting.
6)Surveying time (times) could be added appropriately for higher precision surveying.
7)Known points should be equally spread in the district for better precision surveying.
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