What is anti spoofing in GPS?

Related questions

1. What is GNSS survey?
2. What is an RNAV route?
3. How accurate is GPS in Australia?
4. What was selective availability and why was it discontinued?
5. What is the meaning of selective availability in GPS?
6. What frequency does GPS use?
7. What is an intermediate fix?
8. When was GPS selective availability off?

Tags

1. #accuracy
2. #global
3. #military
4. #positioning
5. #selective
6. #spoofing
7. #module
8. #receivers
9. #decryption
10. #saasm
11. #civilian
12. #availability
13. #observations
14. #united
15. #reduced
16. #while
17. #system
18. #states
19. #allow
20. #precision
21. #through