CONS 127 Observing the Earth from Space
Assignment 3: Global Positioning Systems
For this assignment you will…
• Learn how to use the Trimble’s GNSS Planning Online web tool to ascertain GNSS
satellite positions and availability relative to a given geographic location
• Learn to read Dilution of Precision (DOP) charts to determine when and why higher
and lower DOP values occur throughout the day
• Gain an understanding of the types of errors that can reduce GNSS accuracy
Submit your answers in accordance with the posted quiz questions (in CANVAS):
• Answer questions 1 through 16, for a total of 50 points.
• Submit your answers to the Assignment 2 Quiz.
• If you have questions, try your discussion board first. Please feel free to email your TA otherwise !
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Notes:
• All questions are to be answered on Canvas.
• This assignment was designed to use version 1.5.0.0 of Trimble GNSS Planning Online software.
• To avoid errors, please use Google Chrome to access Trimble GNSS Planning Online.
• To answer some questions, you will need to use online resources other than the websites referenced
here. To ensure accuracy and credibility, always verify information by consulting trustworthy sources
(refer to Assignment 2 for notes on online research).
1
, Instructions
1. Go to www.gnssplanning.com in your web browser
2. This will open the “Settings” page.
3. Input the information contained in Table 1 (you can copy and paste from this table):
Table 1. Input values for the GNSS Planning Online “Settings” page.
Latitude N 49° 15' 38.0251"
Longitude W 123° 14' 56.9923"
Height 500
Elevation cutoff 10
Day 2024-10-01
Start time 09:00
Period [hours] 24
Time zone (UTC-08:00) Pacific Time (US & Canada)
4. Click “Apply”.
5. Confirm that you have entered the correct information with Figure 1.
Figure 1. Input values for the GNSS Planning Online “Settings” page.
2
Assignment 3: Global Positioning Systems
For this assignment you will…
• Learn how to use the Trimble’s GNSS Planning Online web tool to ascertain GNSS
satellite positions and availability relative to a given geographic location
• Learn to read Dilution of Precision (DOP) charts to determine when and why higher
and lower DOP values occur throughout the day
• Gain an understanding of the types of errors that can reduce GNSS accuracy
Submit your answers in accordance with the posted quiz questions (in CANVAS):
• Answer questions 1 through 16, for a total of 50 points.
• Submit your answers to the Assignment 2 Quiz.
• If you have questions, try your discussion board first. Please feel free to email your TA otherwise !
&
%
$
#
"
Notes:
• All questions are to be answered on Canvas.
• This assignment was designed to use version 1.5.0.0 of Trimble GNSS Planning Online software.
• To avoid errors, please use Google Chrome to access Trimble GNSS Planning Online.
• To answer some questions, you will need to use online resources other than the websites referenced
here. To ensure accuracy and credibility, always verify information by consulting trustworthy sources
(refer to Assignment 2 for notes on online research).
1
, Instructions
1. Go to www.gnssplanning.com in your web browser
2. This will open the “Settings” page.
3. Input the information contained in Table 1 (you can copy and paste from this table):
Table 1. Input values for the GNSS Planning Online “Settings” page.
Latitude N 49° 15' 38.0251"
Longitude W 123° 14' 56.9923"
Height 500
Elevation cutoff 10
Day 2024-10-01
Start time 09:00
Period [hours] 24
Time zone (UTC-08:00) Pacific Time (US & Canada)
4. Click “Apply”.
5. Confirm that you have entered the correct information with Figure 1.
Figure 1. Input values for the GNSS Planning Online “Settings” page.
2
