K20s
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Chapter
Ⅵ
Measuring Operation
Reading this chapter, you can grasp in detail how to use the K20S measurement to
do system static, RTK operations.
GPS measurement operation scheme refers to the operating scheme used to determine the
relative position between the stations with the help of GPS technology. Point coordinate
precision obtained is not the same; its operating methods and observation time are also different,
thus having different range of applications. GNSS receiver operating program is divided into two
types: static measurement and RTK dynamic measurement (including the base station and rover
station).
Test environment requirements:
(1) Observation stations (ie, the receiving antenna settlements) should stay away from
high-power radio transmitters and high voltage transmission lines in order to avoid the magnetic
field around the GPS satellite signal interference. Receiver antenna and its distance shall not be
less than 200 m;
(2) Observation stations should not be near to the large area waters or objects which can strongly
reflect (or absorb) electromagnetic wave to weaken the effects of multi-path;
(3) Observation stations should be located in places where the receiving device can be installed
easily, and good vision available. Elevation angle of obstacles in view should generally be
greater than 10° to 15°, in order to weaken the effects of troposphere refraction;
(4)Observation stations should be selected in a convenient place, and easy to use other means of
measuring, joint measurement and expansion;
(5) For the long baseline GPS network, should also consider the vicinity good communication
facilities (telephone and telegraph, post and telecommunications) and power supply, for power
between the stations and equipments.
§6.1 Static Operation
§6.1.1 Static Measurements Profile
Static measurements
GPS positioning measurement by installed three (or more) GNSS receivers to perform
simultaneous observation and determine the relative position between the stations.
Scope
The establishment of a national geodetic control network (second or less);
