4.3. Interference to GPS Receivers

In this section, we discuss the interference effect of multiple UWB transmitters on GPS receivers. GPS devices are satellite-based radio navigation services that provide worldwide access to accurate position and time information. These systems are used in numerous critical applications in military, aviation, law enforcement, public safety, emergency response, personnel, and vehicle monitoring and tracking. Since GPS is a space-based system and the signals sent from its satellites to Earth are as weak as –130 dBm, GPS receivers are very vulnerable to interference. Therefore, GPS providers and users around the world have expressed a great deal of concern about UWB interference with weak GPS signals.

The FAA [ ...

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