How to verify the performance of the product in the production process of the navigation chip and terminal, how to verify the positioning performance of the terminal in some special occasions, and how to ensure the quality of the product in mass production? Satellite signal simulator can solve these problems reasonably, so it is widely used in various links of R & D, development, production and testing of satellite navigation equipment, and can complete positioning accuracy test, speed accuracy test, channel delay test, conformance test and ranging precision test.

As early as the early stage of GPS construction, the ground related test experiment has been carried out in an all-round way. A very important link is to use the satellite navigation signal simulator to generate navigation signals and conduct the testing of the navigation chip and terminal. While simulating the movement of the navigation satellite, it can also simulate the movement state of the receiving terminal at the same time. The simulator can not only generate satellite navigation analog signals according to pre-set track information, but also receive information such as position, velocity, acceleration and attitude of the carrier transmitted by the hardware in the loop simulation computer, and simulate the distribution and movement of multiple satellites in the trajectory. Only in the laboratory has done enough testing and verification of satellite navigation products, in order to withstand the test of customers and the market.

The SYN5203 satellite signal simulator can theoretically connect all the GPS receivers within the range of 10 thousand square meters and 100 meters in radius. If you need to narrow the analog GPS signal radiation range and prevent the signal intensity from being too large to interfere with other peripheral devices, it is recommended that direct connection and direct connection signal be relatively weak, and signal attenuators can be added to the simulator output interface.

With regard to the track length of the SYN5203 satellite simulator, the default standard version is 32G support for 100 minutes and 64g support for 200 minutes, and so on. Users can purchase larger SD cards themselves or extend to 1T external hard disks. It can preset multiple trajectories or static trajectories, that is, fixed points. The track switch is convenient, and the track preset number is not limited, and the detailed data such as velocity and acceleration can be set.It has the functions of single run and infinite loop.

The temperature compensation crystal oscillator of the satellite simulator can be externally connected with a constant temperature crystal oscillator. When the built-in temperature compensation crystal oscillator is used, the positioning accuracy of the signal accuracy is less than 5 meters. When the external constant temperature crystal oscillator is positioned, the positioning accuracy is less than 1 meters, and the speed accuracy of the signal accuracy is less than 0.1m/s. When the track is recorded, the vehicle antenna with external SMA interface is required, the positioning accuracy is 2.5 m CEP, and the speed accuracy is 0.1m/s.

The device supports ephemeris input. In practical applications, the receiver of the client is unable to distinguish the signals and real signals provided by the GPS simulator, because all statements received by the receiver can be output.However, the equipment is limited to scientific research, technical exchange, equipment maintenance, and shall not be used for any commercial profit-making activities or illegal purposes, otherwise the consequences will be conceited.

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