Figure 4.6 Geodetic Iv Gps Antenna On Rover Pole - ashtech Z-Xtreme System Manual

For post-process surveying

Hide thumbs Also See for Z-Xtreme:

Table of Contents

able to easily move around the project site with the rover system in order to position

objects of interest. This requires that the rover system be set up in a man-portable

configuration, as described below.

1. Mount GPS antenna on Rover pole

For kinematic data collection, the rover antenna is mounted on a fixed-height

pole carried by the operator, as shown in Figure 4.6. The pole includes a

level vial to assist the operator in leveling the pole and antenna over the fea-

tures to be surveyed.

Figure 4.6 Geodetic IV GPS Antenna on Rover Pole

2. Measure and record instrument height (HI) of GPS antenna

Remember that measurements of satellite data are made at the center (hori-

zontally and vertically) of the GPS antenna. The HI allows the computed

position of the antenna center to be transferred to the ground. It is critical that

the HI of the antenna above the ground is measured accurately. It can be

physically measured, or the HI can be calculated based on the known fixed

length of the pole plus the length of the quick-release and the thickness of the

antenna from the base to the data measurement point.

3. Mount handheld computer

For kinematic method of data collection, a handheld computer is highly rec-

ommended. The computer is mounted onto the pole along with the GPS

antenna, as shown in Figure 4.7. A special mounting bracket for the hand-

Post-Process GPS Surveying

Table of Contents