This invention covers the use of multiple internal antennas to locate a nuisance cell phone which is being inappropriately operated. For a largely 1-dimensional layout like an airplane, an embodiment teaches the location being done by using differential timing teaches the use of either differential timing...http://www.google.fr/patents/US7444154?utm_source=gb-gplus-shareBrevet US7444154 - Nuisance cell phone locator
