|
==How it works== GPS aircraft tracking solution needs a device embedded in the aircraft and made of a GPS sensor. It transmits in real time or not the GPS position received on board to a server on ground via a communication network. The server collects the data. Data received on ground can be recorded and/or used to display the aircraft real time position. Different kinds of communication networks are used to transmit data on ground: *ACARS network which is a hybrid of VHF, Satellite and HF networks *Transponder "Mode S" (ADS-B) network *Satellite network (Globalstar, Inmarsat, IRIDIUM, Thuraya) *GSM network Devices installed in the aircraft are avionics components like ACARS, ADS-B or other solutions. In these cases, the receiving and transmitting antenna are usually located outside of the airframe. When devices are not installed as avionics components they have to be completely independent from the aircraft. They are typically placed in the aircraft airframe in a location where the GPS and communication satellites are directly visible to the device, for example through the cockpit window. The output signal must also be able to go through the aircraft - most Civil Aviation Authorities require compliance with DO-160 for Audio Frequency Conducted Susceptibility and Induced Signal Susceptibility. Authorities classify non-installed components as "Transmitting Portable Electronic Devices" (T-PEDS) and as such require them to be switched off during the critical phases of flight.〔http://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.information/documentID/22448〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GPS aircraft tracking」の詳細全文を読む スポンサード リンク
|