Some of these interests offer to share frequency bands that GPS advocates fear would unacceptably compromise the usability of the GPS signal. When systems operate at frequencies too close to one another, there can result a high risk to the usability of signals that, like GPS, are broadcast at low power. Many of the systems that potentially can interfere with GPS operation in this manner are themselves worthy technologies capable of fulfilling many important economic and safety needs for their users. Less fortunately, the MSS spectrum lies uncomfortably close to the GPS spectrum. International aviation relies increasingly on satellite navigation for safe and efficient operations.
Safe operations are the basis of the viability of the aviation industry.
It therefore is necessary that the critical aviation communications and navigation links be protected adequately. During her presentation, Ms. Frodge emphasized that GPS is a global spectrum-based utility. There are widespread GPS applications, including every mode of transportation, as well as other industries such as surveying, agriculture, telecommunications, banking, power, and asset tracking. These applications provide many benefits including increased safety and efficiency at reduced costs. However, there is no system without spectrum.