Assignment 0 - Formative
Below are the questions from the formative assessment (assignment 0).
Question
Could you share the calculation for determining the orbital velocity of GPS satellites?
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Question
How does including orbital parameters in the navigation message benefit satellite navigation?
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Question
Why is an atomic clock crucial for GPS satellites, and what are the consequences of a 100 nanosecond offset?
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Question
Why are quartz clocks necessary in GPS receivers, and what happens with a 100 nano-second offset?
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Question
Explain the connection between Special and General Relativity with GPS positioning
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Question
What's the purpose of a bidirectional signal between the satellite and control segments?
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Question
Why isn't a bidirectional signal needed between the satellite and user segments?
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Question
Why do some outdoor GPS receivers have a barometer and electronic compass?
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Question
What led to the decision for a nominal GPS constellation of 4 satellites in each of the 6 orbital planes?
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Question
Define Pseudo Random Noise and Pseudo Random Noise Correlation
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Question
What is receiver clock bias, and how is it addressed?
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Question
Why isn't the receiver clock bias a contributing component to User-Equivalent Range Error?
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Question
Why is Dilution of Precision (DOP) a theoretical value?
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Question
Explain the relationship between PDOP, VDOP, and HDOP
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Question
Differentiate between Augmented GPS and Assisted GPS
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Question
Why are range corrections used for DGPS instead of measured positioning error?
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Question
What was Selective Availability, and why was it turned off in May 2000?
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Question
What's the advantage of using a WAAS/EGNOS-enabled GPS receiver?
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Question
What's the angular velocity of a WAAS/EGNOS satellite relative to the Earth's angular velocity?
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Question
How does Assisted GPS (AGPS) contribute to a fast Time To First Fix (TTFF)?
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Question
Why is providing an approximate user position through AGPS advantageous?
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Question
How does the Doppler effect from orbit velocity affect the received frequency of the L1 carrier wave?
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Question
Why does a smartphone's GPS have a faster TTFF than a stand-alone outdoor GPS receiver?
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Question
What's the advantage of High Sensitivity GPS for indoor positioning, and what's the disadvantage?
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Question
What's the connection between Galileo-HAS and GNSS-PPP?
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