Method, system and receiving station for receiving differential data of reference station

Abstract

The invention discloses a method and system for receiving base station difference data and a receiving radio station. The method comprises the following steps: pre-storing a plurality of frequency points and identification codes in the receiving radio station, and with one frequency point in the plurality of frequency points being as a receiving frequency point, receiving data and recording data receiving time; obtaining a frame header of the data; when the frame header is correct, obtaining identification codes from the data; when the identification codes are matched with the pre-stored identification codes, obtaining difference data from the data; when the identification codes are not matched with the pre-stored identification codes, continuing receiving data at the frequency point and judging the frame header and the identification codes until the data receiving time is larger than preset time and then, switching the frequency point and re-receiving the data or the frame header is correct and the identification codes are matched; and when the frame header is not correct, continuing receiving data at the frequency point and judging the frame header until the data receiving time is larger than the preset time and then, switching the frequency point and re-receiving the data or the frame header is correct, thereby ensuring that the receiving radio station receives the correct difference data and saving both time and labor.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a method, a system and a receiving station for receiving differential data of a reference station. Background technique [0002] see figure 1 , in the field of precision agriculture, the method for the mobile station to receive the differential data of the base station is as follows: [0003] First, the base station 1 sends a message at the transmission frequency f1 through the transmitting station 11, and the message includes differential data; [0004] Then, the receiving station 21 (the number of receiving stations is equal to the number of mobile stations, also distinguished by 1 to n) of the mobile station 2 (multiple mobile stations are arranged in an operation area, distinguished by 1 to n) receives the message, and the Obtain differential data in the message, subsequently, the receiver 22 (that is mobile station receiver 22 that is mobile station receiver 2...

AI Technical Summary

Problems solved by technology

Since the differential data does not come from the base station 1, the control instructions generated by the controller based on the differential data will cause the tractor to deviate from the planned route and other problems

In order to ensure that the tractor receives the correct differential data, it is necessary to manually change the transmitting frequency of the transmitting station 11 and the receiving frequency of the receiving station 21 so that the receiving station 21 can receive the message of the transmitting station 11. However, there are at least dozens of There are at least hundreds of mobile station receivers 22, and each receiver is connected to a receiving station 21. Manually changing the frequency of so many receiving stations is time-consuming and labor-intensive, which affects work efficiency.

[0007] In addition, in the field of driving test / driving training, the receiver installed on the vehicle needs to receive the differential data of the reference station to realize the positioning of the vehicle, and there are also cases where it is interfered by other reference stations and needs to manually change the transmitting frequency of the transmitting station and the receiving station frequency problem

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