Logan Scott

Disaster-preparedness plans recognize the individual’s role in his or her own survival. When storms approach, have water, food, and basic survival gear on hand. It takes time for help to arrive. The civil GPS industry faces an oncoming storm of interference, and the receiver is the first line of...more >>

Thousands of man hours and millions of dollars later, we finally have the 975-page GPS Technical Working Group (TWG) report, confirming what five minutes of back-of-the-envelope calculation predicted. Hooray for our side, good job GPS Industry Council; we’ve won the war and the foe is vanquished,...more >>

Inexpensive, readily available GPS jammers constitute a threat to safety, national infrastructure, and industry revenue streams. Cell phones could incorporate GPS jam-to-noise (J/N) ratio detectors to provide timely interference detection and effective localization, with a flexible and updateable...more >>

The growing need for ubiquitous positioning and navigation to service the anywhere, anytime needs of the consumer location-based services (LBS) markets will strongly influence future receiver architectures. In particular, the need to operate with a multiplicity of GNSS systems, but also with other...more >>

The growing use of GPS in civil security and monitoring applications brings with it a vulnerability to criminal enterprises suborning GPS for financial gain.

An innovative encryption system integrates position and time into the process for an additional layer of security.