Which among the followings is main parameter used in Pseudoranging as its main constituent?

Correct option is C

The main parameter used in Pseudoranging is Time.

• Pseudoranging is a technique used in satellite navigation systems like GPS (Global Positioning System) to determine the distance between a receiver and a satellite.
• The process measures the time delay between the transmission of a signal from the satellite and its reception by the receiver.
• This time delay, when multiplied by the speed of light, gives the approximate distance (pseudo-range) to the satellite.

Key points:

1. Time is crucial because the distance calculation depends on accurately measuring how long it takes the signal to travel from the satellite to the receiver.
2. A pseudo-range differs from the true range due to errors such as satellite clock offsets, atmospheric interference, and multipath effects.
3. The GPS receiver uses signals from at least four satellites to compute the user's position through trilateration.

Information Booster:

1. Distance: Though the output of pseudoranging is distance, the primary parameter is time.​​
2. Velocity: Velocity of light (approximately $$3 \times 10^8$$​ 3×1083 \times 10^8
    m/s ) is a constant used in the calculation but is not the main parameter.
3. Object size: This parameter is irrelevant in pseudoranging.

Additional Knowledge:

• Pseudoranging is a fundamental concept in Global Navigation Satellite Systems (GNSS).
• Accuracy in timing is ensured by atomic clocks on satellites and corrections made by the GPS receiver.
• Errors in pseudoranging are corrected using techniques like Differential GPS (DGPS) or Real-Time Kinematic (RTK) methods.

Key Points:

• The accuracy of pseudoranging depends on the precision of time measurement.
• At least four satellites are required for determining a 3D position (latitude, longitude, and altitude).
• Time synchronization between the satellite and receiver is critical for accurate navigation.