Introduction to GPS: Theory and Applications



GS 608: Introduction to GPS: Theory and Applications

Spring Quarter 2006

Distributed: May 8, 2006

Date Due: May 26, 2006

Problem Set 4

Using the TGO handout (posted on class web-page) and instructions given to you in class use the Trimble Geomatics Office software to process the GPS data previously collected.

STATIC MODE:

1. Use the static data set collected with DL-4 NovAtel receiver at base station (“Arbitrary Base”) with RINEX files: 00161252.06O and 00161252.06N, and Trimble 5700 receiver at rover station (“Rover-2”) with RINEX files: 41151250.06O and 41151250.06N. The antenna heights are: 1.45 m to the bottom of the antenna mount at the “Arb. Base” and 1.60 m to the bottom of the antenna mount at the “Rover-2”. The antenna types are NovAtel GPS 600 for “Arbitrary Base” and Zephyr Geodetic for“Rover-2”.

2. Use the differential processing mode: select the “L1 fixed” (performing a fixed integers solution) for your data processing; save your results. The objective is to determine the ancillary base station, named “Arb. Base”, which in this case is a new base (arbitrary), and we want to determine coordinates for the rover station (Rover-2) Note that coordinates of “Arb. Base” does not need to be modified! (Just mark them as control quality only!)

3. After the data processing has been completed, create a full Project Report including plots of residuals, satellite tracking summary at stations and single-differenced summary etc.

4. Enclose the printout of the Report for the solution types that you performed (L1-fixed). Discuss your results in terms of coordinates for Rover-1 and Rover-2 solution from lab5 and 6. Note that Rover-1 and Rover-2 are in the same location, but they were processed with respect to different base station!

KINEMATIC MODE:

1. Use the static data set collected with Topcon Javad Legacy receiver at base station (“Base”) with RINEX files: 2629125.06O and 2629125.06N. “Base” coordinates in WGS-84 frame are:

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2. Using the data collected (vehicle) with Trimble 5700 receiver in a kinematic mode with RINEX files: 41151251.06O and 41151251.06N process a “L1 fixed” solution with respect to Base. Note: use correct antenna height/type. Plot the trajectory (the instruction is given below) and GPS vector report of all baselines.

3. Baseline report and GPS Vector report

• GPS Vector report includes point name, vector component as well as the RMS. Baseline report contains the baseline computing detail and satellite information.

• Select All.

• Hit Reports/Custom Reports/GPS Vectors to create a GPS vector report.

• Print out this GPS vector report.

Note: You can only select ONE baseline when you attempt to generate a Baseline Report. If you choose more than one baselines, this menu will be disappeared.

4. Plot the trajectory

• Switch to plan view: View/Plan

• Adjust Layout: File/Sheet Setup/Best Fit.

• Plot it out: File/Plot Print.

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