Elementary Surveying, Global Edition
Elementary Surveying, Global Edition
14th Edition
ISBN: 9781292060491
Author: Charles D. Ghilani, Paul Wolf
Publisher: PEARSON
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Chapter 13, Problem 13.1P
To determine

The names of the two new civilian codes added to the modernized satellites.

Expert Solution & Answer
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Answer to Problem 13.1P

The two new civilian codes added to modernized satellites are:

L2C codeandL5 code

Explanation of Solution

Given Information:

Earlier only C/A and P codes were used to modulate the GPS signals. L1 frequency was modulated with C/A and P codes while L2 frequency was modulated with only P codes.

Today in the modern satellites L2 frequency is modulated with a second code called the L2C code and its P-code is replaced with a new military code known as M-code.

Also in 1999, the Interagency GPS Executive Board (IGEB) added a third civilian signal known as the L5 which has both civilian code and a codeless component.

So today the two new civilian codes added to modernized satellites are:

  1. L2C code
  2. L5 code

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