Method for navigation and positioning of receiver and receiver

A receiver, comprising:

• an antenna for receiving basic broadcast messages and correction parameters;
• at least one storage apparatus for storing the basic broadcast messages and the correction parameters received;
• a processing module for processing the basic broadcast messages and correction parameters in the storage apparatus to obtain an operation result of user positioning;
• and
• a user interaction module for indicating the operation result of the user positioning,
• wherein the processing module is used to perform the following operations:
• receiving basic broadcast messages and correction parameters of a plurality of satellites, and establishing a pseudorange observation equation and a phase observation equation corresponding to each of the plurality of satellites respectively based on the received basic broadcast messages;
• correcting the pseudorange observation equation and the phase observation equation using the received correction parameters corresponding to each of the plurality of satellites to obtain the corrected pseudorange observation equation and the corrected phase observation equation;
• constructing an ionosphere-free combined observation of each of the plurality of satellites as a first observation for a single-frequency receiver according to the corrected pseudorange observation equation and the corrected phase observation equation, and constructing an ionosphere-free combined observation of each of the plurality of satellites as a first observation for a dual-frequency receiver or a tri-frequency receiver according to the corrected phase observation equation;
• constructing a second observation corresponding to each of the plurality of satellites according to the corrected pseudorange observation equation;
• and
• jointly solving the first observations and the second observations of the plurality of satellites to obtain the operation result of the user positioning,
• wherein the correction parameters is are selected from the following combinations:
• a partition comprehensive correction number x4;
• and
• a combination of the partition comprehensive correction number x4 and at least one of an orbit correction number x1, a clock difference correction number x2 and an ionosphere correction number x3.

A non-transitory computer readable medium comprising instructions which, when executed by at least one processing module, cause the at least one processing module to perform a method for navigational and positioning, the method comprising:

• receiving basic broadcast messages and correction parameters of a plurality of satellites, and establishing a pseudorange observation equation and a phase observation equation corresponding to each of the plurality of satellites respectively based on the received basic broadcast messages;
• correcting the pseudorange observation equation and the phase observation equation using the received correction parameters corresponding to each of the plurality of satellites to obtain the corrected pseudorange observation equation and the corrected phase observation equation;
• constructing an ionosphere-free combined observation of each of the plurality of satellites as a first observation for a single-frequency receiver according to the corrected pseudorange observation equation and the corrected phase observation equation, and constructing an ionosphere-free combined observation of each of the plurality of satellites as a first observation for a dual-frequency receiver or a tri-frequency receiver according to the corrected phase observation equation;
• constructing a second observation corresponding to each of the plurality of satellites according to the corrected pseudorange observation equation;
• and
• jointly solving the first observations and the second observations of the plurality of satellites to obtain an operation result of the user positioning,
• wherein the correction parameters are selected from the following combinations:
• a partition comprehensive correction number x4;
• and
• a combination of the partition comprehensive correction number x4 and at least one of an orbit correction number x1, a clock difference correction number X2 and an ionosphere correction number x3.