A Random code? Since each satellite has its own unique Pseudo- Random Code, this complexity also guarantees that the receiver won,'t accidentally pick up another satellite's So all the satellites can use the same frequency without jamming each other. And it makes it more difficult for a hostile force to jam the system In fact the Pseudo Random Code gives the dod a way to control access to the system 電 Principles of the Global Positioning System 20053181515 a Random code? Another reason for the complexity of the Pseudo Random Code, is crucial to making GPS economical The codes make it possible to use information theory to "amplify"the GPS signal And that's why GPS receivers don' t need big satellite dishes to receive the gPs signals Principles of the Global Positioning System 2005-3-1816168 Principles of the Global Positioning System 2005-3-18 15 15 A Random Code? ¾ Since each satellite has its own unique Pseudo￾Random Code, this complexity also guarantees that the receiver won't accidentally pick up another satellite's signal. ¾ So all the satellites can use the same frequency without jamming each other. And it makes it more difficult for a hostile force to jam the system. ¾ In fact the Pseudo Random Code gives the DoD a way to control access to the system. Principles of the Global Positioning System 2005-3-18 16 16 A Random Code? ¾ Another reason for the complexity of the Pseudo Random Code, is crucial to making GPS economical. ¾ The codes make it possible to use information theory to “amplify” the GPS signal. And that's why GPS receivers don't need big satellite dishes to receive the GPS signals