Interference Analysis to Aerial Flight Caused by UHV Lines Using Airborne GPS

Using airborne GPS monitors,we analyzes the interferences to aerial flight caused by ultra high voltage(UHV) lines.The continuous flight track data was collected by GPS installed in a helicopter.The methodology of data processing and analysis was studied.No regularity appears between the discrepancies and distances of UHV lines.Some conclusions and suggestions are drawn to the protecting distance of UHV lines to the aeronautical radio navigation station.