Final answer:
A PPS receiver is more jam-resistant compared to a C/A signal receiver due to its encryption and spread-spectrum technology, which provide enhanced protection against interference.
Step-by-step explanation:
True. A Precise Positioning Service (PPS) receiver is indeed considered more jam-resistant compared to a receiver that only receives the Coarse/Acquisition (C/A) signal. PPS, used primarily by the military and authorized users, incorporates encryption and spread-spectrum technology which makes it less susceptible to jamming and interference compared to the C/A signal, which is available for civilian use and does not have the same level of protection.
These measures ensure that PPS receivers maintain functionality in environments where signal interference is present, which is critical for military operations and other applications requiring higher signal security and reliability.