Explain how to calculate the Malaysia Airlines plane crashed due to the Doppler effect:

Explain how to calculate the Malaysia Airlines plane crashed due to the Doppler effect:

What happened to MH370.

The calculation of experts will be carried out by Inmarsat called “Sina Francisco There was no parallel in history.” in Beijing on March 25th news, according to CNN reports, yesterday, the Prime Minister of Malaysia informed the flight MH370 families, their loved ones have not died, because the plane has been able to confirm in South India Ocean crash. But how does Britain’s Inmarsat, a key clue to this conclusion, do this?
Media sources: CNN experts will calculate the Inmarsat company called unprecedented, is never tried before. Simply put, previously based on satellite signal data, has been able to generally know that Malaysia Airlines aircraft may fly along the North-South two directions. But which direction to fly is uncertain. If North, then land. If there is a world of waters to the south. And this British satellite company made a major breakthrough, it is to determine the aircraft is flying south, thus excluding the possibility of northward flight.
The basic principle of doing so is actually very simple, that is, using the Doppler effect”.
The definition of the Doppler effect refers to the source and the observer relative motion, the observer and wave source to accept the frequency emitted frequency is not the same phenomenon. Simply because the source of relative movement of the observer, the wavelength frequency is compression or tension phenomenon. Such waves can be light waves or sound waves. The Doppler effect of light is widely used in the field of astronomy — when the celestial body is away from us, the light it emits will be stretched, Xiang Hongduan wavelength offset, known as the “red shift”, it even helped Harbert find the expansion of the universe; conversely, if the objects close to the observation direction for us, they will show a blue shift the phenomenon of.
Similarly, sound waves can have such a phenomenon. Maybe a lot of people have had this experience: when you stand on the side of the road, saw an ambulance from the front and galloped off, as it approaches the stage and send it away from the siren sound stage is different. This is the wavelength compression and stretching caused by sound waves close to and away from you.
Specific to Malaysia Airlines incident, some equipment on the plane will periodically send to the Inmarsat satellite request connection Ping signal, experts call it handshake”. But Malaysia Airlines did not purchase satellite services, so this request will be rejected satellite. But although the connection is not established between them, so there is no way to collect state information at the time of the aircraft, but the Inmarsat engineers have tried a new approach — they have Doppler effect every time in the Ping signal is analyzed, it can judge that the signal is compressed or stretched.
As the satellite fixed over the earth, while Malaysia Airlines aircraft was in flight, so strictly speaking Malaysia Airlines aircraft and satellite relative motion exists between, the distance is constantly changing. Therefore by nanosecond precision calculation of relative motion between the aircraft and 64.5 degrees latitude, can determine the approximate position of the aircraft flight. Experts analyzed the direction of each Ping signal information, and in the process has been the aerospace industry experts and Boeing technical assistance.
In addition, the use of triangulation, engineers will be expected to further improve the results of their calculations, estimates of the likely location of the plane crash, because they may calculate the transmitted signal when the angle of flight aircraft.

What happened to MH370.

The calculation of experts will be carried out by Inmarsat called “Sina Francisco There was no parallel in history.” in Beijing on March 25th news, according to CNN reports, yesterday, the Prime Minister of Malaysia informed the flight MH370 families, their loved ones have not died, because the plane has been able to confirm in South India Ocean crash. But how does Britain’s Inmarsat, a key clue to this conclusion, do this?
Media sources: CNN experts will calculate the Inmarsat company called unprecedented, is never tried before. Simply put, previously based on satellite signal data, has been able to generally know that Malaysia Airlines aircraft may fly along the North-South two directions. But which direction to fly is uncertain. If North, then land. If there is a world of waters to the south. And this British satellite company made a major breakthrough, it is to determine the aircraft is flying south, thus excluding the possibility of northward flight.
The basic principle of doing so is actually very simple, that is, using the Doppler effect”.
The definition of the Doppler effect refers to the source and the observer relative motion, the observer and wave source to accept the frequency emitted frequency is not the same phenomenon. Simply because the source of relative movement of the observer, the wavelength frequency is compression or tension phenomenon. Such waves can be light waves or sound waves. The Doppler effect of light is widely used in the field of astronomy — when the celestial body is away from us, the light it emits will be stretched, Xiang Hongduan wavelength offset, known as the “red shift”, it even helped Harbert find the expansion of the universe; conversely, if the objects close to the observation direction for us, they will show a blue shift the phenomenon of.
Similarly, sound waves can have such a phenomenon. Maybe a lot of people have had this experience: when you stand on the side of the road, saw an ambulance from the front and galloped off, as it approaches the stage and send it away from the siren sound stage is different. This is the wavelength compression and stretching caused by sound waves close to and away from you.
Specific to Malaysia Airlines incident, some equipment on the plane will periodically send to the Inmarsat satellite request connection Ping signal, experts call it handshake”. But Malaysia Airlines did not purchase satellite services, so this request will be rejected satellite. But although the connection is not established between them, so there is no way to collect state information at the time of the aircraft, but the Inmarsat engineers have tried a new approach — they have Doppler effect every time in the Ping signal is analyzed, it can judge that the signal is compressed or stretched.
As the satellite fixed over the earth, while Malaysia Airlines aircraft was in flight, so strictly speaking Malaysia Airlines aircraft and satellite relative motion exists between, the distance is constantly changing. Therefore by nanosecond precision calculation of relative motion between the aircraft and 64.5 degrees latitude, can determine the approximate position of the aircraft flight. Experts analyzed the direction of each Ping signal information, and in the process has been the aerospace industry experts and Boeing technical assistance.
In addition, the use of triangulation, engineers will be expected to further improve the results of their calculations, estimates of the likely location of the plane crash, because they may calculate the transmitted signal when the angle of flight aircraft.