How does the vehicle control system work?
To put it simply, navigation systems consist of three parts:
groups of satellites orbiting the Earth;
the ground control segment, whose tasks are to build and launch satellites into orbit, control their movement, and coordinate the work of all system components;
user equipment, that is, the receivers themselves.
The principle of operation is to measure the distance from the receiver to the satellites. Radio signals are used for this. There is accurate data on the location of satellites in orbit. They are stored in the memory of the receiving devices and are constantly updated. At the same time, the radio signals emitted by each satellite contain information about the location of all elements of the orbital grouping.
The distance is measured by determining the signal transmission time. The calculations are based on the speed of propagation of radio waves. Although it is affected by many conditions, this value is considered to be known and constant. The satellites are equipped with high-precision atomic clocks. Thus, in each signal there is information about the time of its emission. Knowing the time and speed of wave propagation, it is easy to calculate the distance to the receiver antenna, respectively, its coordinates. Using this data, it is possible to determine other parameters of the object — speed, direction of movement, distance traveled.
To put it simply, navigation systems consist of three parts:
groups of satellites orbiting the Earth;
the ground control segment, whose tasks are to build and launch satellites into orbit, control their movement, and coordinate the work of all system components;
user equipment, that is, the receivers themselves.
The principle of operation is to measure the distance from the receiver to the satellites. Radio signals are used for this. There is accurate data on the location of satellites in orbit. They are stored in the memory of the receiving devices and are constantly updated. At the same time, the radio signals emitted by each satellite contain information about the location of all elements of the orbital grouping.
The distance is measured by determining the signal transmission time. The calculations are based on the speed of propagation of radio waves. Although it is affected by many conditions, this value is considered to be known and constant. The satellites are equipped with high-precision atomic clocks. Thus, in each signal there is information about the time of its emission. Knowing the time and speed of wave propagation, it is easy to calculate the distance to the receiver antenna, respectively, its coordinates. Using this data, it is possible to determine other parameters of the object — speed, direction of movement, distance traveled.
How does the vehicle control system work?
To put it simply, navigation systems consist of three parts:
groups of satellites orbiting the Earth;
the ground control segment, whose tasks are to build and launch satellites into orbit, control their movement, and coordinate the work of all system components;
user equipment, that is, the receivers themselves.
The principle of operation is to measure the distance from the receiver to the satellites. Radio signals are used for this. There is accurate data on the location of satellites in orbit. They are stored in the memory of the receiving devices and are constantly updated. At the same time, the radio signals emitted by each satellite contain information about the location of all elements of the orbital grouping.
The distance is measured by determining the signal transmission time. The calculations are based on the speed of propagation of radio waves. Although it is affected by many conditions, this value is considered to be known and constant. The satellites are equipped with high-precision atomic clocks. Thus, in each signal there is information about the time of its emission. Knowing the time and speed of wave propagation, it is easy to calculate the distance to the receiver antenna, respectively, its coordinates. Using this data, it is possible to determine other parameters of the object — speed, direction of movement, distance traveled.
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