A low-cost differential GPS system applied to unmanned aerial vehicles and its implementation method

Abstract

The invention provides a low-cost difference GPS system used for an unmanned plane and a realization method thereof. The low-cost difference GPS system comprises a first GPS receiver, a first radio station, a second GPS receiver, a second radio station, and a data processing device. The first GPS receiver is disposed on a ground base station, is used to receive a satellite ephemeris, and is used to determine a first pseudorange value from a satellite to the ground base station and the position coordinate of the ground base station. The first radio station is disposed on the ground base station, and is used for data transceiving. The first GPS receiver is connected with the first radio station. The second GPS receiver is disposed on the unmanned plane, is used to receive the satellite ephemeris, and is used to determine a second pseudorange value from the satellite to the unmanned plane and the position coordinate of the unmanned plane. The second radio station is disposed on the unmanned plane, and is used for the data transceiving. The data processing device is disposed on the unmanned plane, and is used for data processing, and is used to determine a distance between the unmanned plane and the ground base station. The two ends of the data processing device are respectively connected with the second GPS receiver and the second radio station, and the second radio station is also connected with the first radio station in a wireless manner. By using the common low-precision GPS receivers, the precision positioning navigation of the unmanned plane with respect to a ground fixed point is realized.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles and the technical field of GPS communication, in particular to a low-cost differential GPS system applied to unmanned aerial vehicles and its implementation method. Background technique [0002] UAVs are widely used in aerial photography, surveying and mapping, agriculture, power inspection and other fields, but most UAV manufacturers currently use GPS technology as UAV positioning technology. [0003] With the development of GPS technology, differential GPS technology has developed rapidly in recent decades because of its ability to improve the accuracy of GPS positioning. However, since the price of differential GPS equipment is very expensive, even as high as tens of thousands to hundreds of thousands of yuan, the cost of use is high, and the differential GPS equipment is too large to be directly assembled on small drones, so that differential GPS technology is not widely used....

AI Technical Summary

Problems solved by technology

However, since the price of differential GPS equipment is very expensive, even as high as tens of thousands to hundreds of thousands of yuan, the cost of use is high, and the differential GPS equipment is too large to be directly assembled on small drones, so that differential GPS technology is not widely used. The field of drones has gained popularity

[0004] It can be seen that the lack of low-cost, light and small differential GPS systems has become a bottleneck restricting the development of the drone industry

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