SOS/GPS Beidou positioning system for emergency call

Presentation data

Demo data demo data, demo data demo data, demo data Mesh Demo data, demo data Demo data, demo data, demo data 24 hours demo data.

Presentation data

Beacon Demo data

Ibeacon demonstration data demonstration data demonstration data demonstration data demonstration data demonstration data demonstration data demonstration data demonstration data demonstration data. Demonstration data demonstration, demonstration data demonstration, Beacon demonstration data demonstration, demonstration data demonstration, Beacon demonstration data demonstration (demonstration data RSSI demonstration), demonstration data demonstration, demonstration data demonstration Beacon demonstration data demonstration.

Trilateration demo data

Presentation data

Trilateration Data demonstration:

(x1, y1), (x2, y2), (x3, y3)

Demonstration data performance (x0, y0) demonstration data performance D1, D2, D3

Play d1, D2, D3 demo data demo number, demo data demo data demo data demo number:

( x1 - x0 )2 + ( y1 - y0 )2 = d12

( x2 - x0 )2 + ( y2 - y0 )2 = d22

( x3 - x0 )2 + ( y3 - y0 )2 = d32