This is to ensure that no interference to any rf sensitive device and proper system test can be conducted before the actual implementation.

这是为了确保没有干扰任何敏感的射频设备和适当的系统测试，可进行前的实际执行情况。

youdao

Presumably, the USAF thinks that "the right thing" would involve pulling LightSquared's license, but for its part, the company says it believes Shelton is referring to a test conducted by Garmin (possibly explaining that recent outage in the Southeastern US?) using simulated interference filters -- not the actual filters that it has spent several million dollars developing and perfecting.

ENGADGET: US Air Force raises concerns over LightSquared's LTE network messing with GPS