Why is there no sound when the navigation system is connected to Bluetooth?

1 Answers
SanAyla
07/29/25 10:58pm
Reasons why there is no sound when the navigation system is connected to Bluetooth: 1. The call volume on the phone is not turned on. 2. The volume on the car navigation system is not turned on. 3. The car Bluetooth device needs to establish a pairing relationship. The following is a related introduction to car navigation: 1. Components: The car GPS navigation system consists of two parts. One part consists of a GPS receiver and display device installed in the car; the other part consists of a computer control center. The two parts communicate via positioning satellites. 2. Working principle: In GPS observation, the distance from the satellite to the receiver can be obtained. Using the distance formula in three-dimensional coordinates and three satellites, three equations can be formed to solve the position of the observation point. Considering the error between the satellite's clock and the receiver's clock, there are actually four unknowns: X, Y, Z, and clock difference. Therefore, a fourth satellite needs to be introduced to form four equations for solving, thereby obtaining the longitude, latitude, and elevation of the observation point.
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