Method and device for adjusting baseline resolving parameters

Abstract

The invention discloses a baseline resolving parameter adjusting method and device, and the method comprises the steps: obtaining a baseline length through obtaining observation data of a to-be-resolved baseline, selecting a baseline frequency point combination according to the baseline length, obtaining the number of corresponding baseline available epochs according to the baseline frequency point combination, and adjusting the baseline resolving parameter according to the baseline available epochs. Determining a baseline resolving mode according to the number of available epochs of the baseline, obtaining a baseline observation duration through the baseline resolving mode, determining a sampling interval according to the baseline observation duration, and integrating the sampling interval and the baseline resolving mode into a resolving parameter adjustment scheme of the to-be-resolved baseline for output. According to the baseline resolving parameter adjusting method disclosed by the invention, the resolving mode more suitable for resolving the baseline is selected through the observation data of the to-be-resolved baseline, so that the accuracy of the baseline resolving result is improved; and the corresponding sampling interval is selected according to the determined baseline resolving mode, so that the baseline resolving efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular to a method and device for adjusting baseline solution parameters. Background Art

[0002] Setting the solution parameters is a necessary step before GNSS baseline solution. It is necessary to select appropriate baseline solution parameters according to the actual situation of the observation data to make the baseline solution results easier to fix and obtain higher-precision solution results. Among them, the solution parameters mainly include sampling interval, elevation angle, fixation rate, navigation system, satellite selection and solution mode. It is necessary to conduct statistics and analysis on the observation time, satellite reception and signal-to-noise ratio of the observation data to determine the appropriate values ​​of the baseline solution parameters. Among them, the sampling interval in the solution parameters can control the number of data involved in the solution, while the solution mode can directly affect the solution results. Therefore, if the accuracy and efficiency of the solution results need to be adjusted, the solution mode and sampling interval need to be optimized.

[0003] However, if each piece of data is counted and analyzed according to local conditions, it will bring a lot of workload and affect the efficiency of baseline solution. Summary of the invention

[0004] The present invention provides a method and device for adjusting baseline solution parameters, aiming to solve the above-mentioned technical problems and achieve the technical effect of improving the solution efficiency and solution accuracy of the baseline solution result.

[0005] In order to solve the above technical problem, an embodiment of the present invention provides a method for adjusting baseline solution parameters, comprising the following steps:

[0006] Obtain observation data of the baseline to be solved;

[0007] Acquire a baseline length according to the observation data, and select a baseline frequency point combination according to the baseline length;

[0008] Acquire the number of available epochs of the baseline according to the baseline frequency point combination, and determine the baseline solution mode according to the number of available epochs of the baseline;

[0009] Acquire a baseline observation duration according to the baseline solution mode, and determine a sampling interval according to the baseline observation duration;

[0010] The sampling interval and the baseline solving mode are integrated and output as a solving parameter adjustment scheme for the baseline to be solved.

[0011] The baseline solution parameter adjustment method provided by the present invention first calculates the observation data of the baseline to be solved. Determine its baseline length, then select a suitable baseline frequency combination according to the determined baseline length, and then obtain the corresponding number of available epochs according to the selected baseline frequency combination, so as to determine whether the number of available epochs corresponding to the baseline frequency combination meets the solution requirements, so as to determine whether the solution mode corresponding to the current baseline frequency combination can be used as the baseline solution mode of the baseline to be solved. By selecting a solution mode that is more suitable for solving the baseline through the observation data of the baseline to be solved, the accuracy of the baseline solution result can be effectively improved. And according to the determined baseline solution mode, the observation time is calculated and obtained, and then the appropriate sampling interval is selected as the sampling interval corresponding to the baseline according to the observation time, that is, the corresponding sampling interval is selected through the determined baseline solution mode, which can improve the baseline solution efficiency. The solution parameters that are more suitable for solving the baseline are selected through the observation data of the baseline, including the solution mode and the sampling interval, which improves the accuracy of the baseline solution result and the baseline solution efficiency.

[0012] As a preferred example, the observation data acquires a baseline length, and selects a baseline frequency point combination according to the baseline length, including:

[0013] Calculating and acquiring the baseline length according to the approximate coordinates in the observation data, and comparing the baseline length with a preset first baseline length threshold to obtain a first comparison result;

[0014] When the first comparison result is that the baseline length is less than the first baseline length threshold, outputting the first frequency point combination as the baseline frequency point combination according to the order of the frequency point combination table;

[0015] The frequency point combination table includes a first frequency point combination, a second frequency point combination, a third frequency point combination and a fourth frequency point combination.

[0016] In order to improve the accuracy of the baseline solution results and select a solution mode that is more suitable for the baseline to be solved, the solution parameter adjustment method provided by the present invention first calculates the approximate coordinates in the observation data when selecting the frequency point combination, obtains the approximate length of the baseline to be solved, that is, the baseline length, and compares the baseline length with the preset first baseline length threshold, and selects the corresponding baseline frequency point combination according to the comparison result. If the comparison result shows that the baseline length is less than the first baseline length threshold, it means that the current ionosphere does not interfere significantly with the solution process, and the single-frequency solution mode can be used for solution, which improves the solution efficiency and solution accuracy of the baseline solution.

[0017] The first frequency point combination in the frequency point combination table provided by the present invention is the L1 frequency point combination corresponding to the L1 single-frequency solution mode, while the second frequency point combination, the third frequency point combination and the fourth frequency point combination are all frequency point combinations corresponding to the dual-frequency solution mode. Among them, the second frequency point combination is the L1L2 frequency point combination, the third frequency point combination is the L1 L3 frequency point combination, and the fourth frequency point combination is the ionosphere-free dual-frequency point combination. Therefore, only the first frequency point combination ranked first in the frequency point combination table can be used as the selected baseline frequency point combination, that is, the frequency point combination corresponding to the single-frequency solution mode can be selected as the baseline frequency point combination, that is, the solution mode corresponding to the first frequency point combination is selected as the baseline solution mode.

[0018] As a preferred example, the calculating and obtaining the baseline length according to the approximate coordinates in the observation data, and comparing the baseline length with a preset first baseline length threshold to obtain a first comparison result, further includes:

[0019] When the first comparison result is that the baseline length is greater than or equal to the first baseline length threshold, the baseline length is compared with a preset second baseline length threshold to obtain a second comparison result;

[0020] When the second comparison result is that the baseline length is less than the second baseline length threshold, the second frequency point combination is output as the baseline frequency point combination according to the order of the frequency point combination table.

[0021] If the comparison result shows that the baseline length is greater than the first baseline length threshold, the baseline length is compared with the second baseline length threshold to determine whether the baseline length of the baseline to be solved requires the use of an ionosphere-free dual-frequency solution mode to eliminate ionospheric interference, thereby improving the precision and accuracy of the solution results.

[0022] When the baseline length is less than the second baseline length threshold, it means that there is no need to adopt the ionosphere-free dual-frequency solution mode, but only needs to select the second-ranked second frequency point combination as the baseline frequency point combination according to the order of the frequency point combination table, that is, the second frequency point combination corresponding to the L1 L2 dual-frequency solution mode needs to be used as the baseline frequency point combination.

[0023] As a preferred example, the comparing the baseline length with a preset second baseline length threshold to obtain a second comparison result further includes:

[0024] When the second comparison result is that the baseline length is greater than or equal to the second baseline length threshold, the second frequency point combination, the third frequency point combination and the fourth frequency point combination are output as the baseline frequency point combination.

[0025] If the comparison result shows that the baseline length is greater than the second baseline length threshold, it means that the ionosphere-free dual-frequency solution mode is needed to solve the baseline. Correspondingly, the ionosphere-free dual-frequency solution mode is used as the fourth solution mode, and its corresponding frequency point combination includes the frequency point combination corresponding to all dual-frequency solution modes, that is, the second frequency point combination, the third frequency point combination and the fourth frequency point combination. Therefore, if the comparison result shows that the baseline length is greater than the second baseline length threshold, the second frequency point combination, the third frequency point combination and the fourth frequency point combination are integrated and output as the baseline frequency point combination for subsequent comparison of the number of available epochs.

[0026] As a preferred example, determining the baseline solution mode according to the number of available epochs of the baseline includes:

[0027] Comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result;

[0028] When the third comparison result is that the number of available epochs of the baseline is greater than or equal to the epoch number threshold, the solution mode corresponding to the number of available epochs of the baseline is output as the baseline solution mode.

[0029] After determining the baseline frequency combination, the number of available epochs corresponding to the combination can be obtained as the baseline available epoch number according to the baseline frequency combination. After obtaining the baseline available epoch number, the epoch number is compared with the epoch number threshold to determine whether the baseline available epoch number meets the requirements of baseline solution. Only when it is determined that the baseline available epoch number meets the requirements of baseline solution can the solution mode corresponding to the baseline frequency combination be output as the baseline solution mode to improve the baseline solution precision and accuracy.

[0030] As a preferred example, the comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result further includes:

[0031] When the third comparison result is that the number of available epochs of the baseline is less than the epoch number threshold, the next frequency point combination of the frequency point combination corresponding to the number of available epochs of the baseline is selected as the baseline frequency point combination in the order of the frequency point combination table, and the baseline solution mode is determined according to the number of available epochs of the baseline corresponding to the baseline frequency point combination.

[0032] However, if the comparison result shows that the number of available epochs of the baseline corresponding to the selected baseline frequency combination does not meet the requirements of the baseline solution, the solution mode corresponding to the selected baseline frequency combination cannot be output as the baseline solution mode. The solution parameter adjustment method provided by the present invention selects the next frequency combination of the current baseline frequency combination as the baseline frequency combination in the order of the frequency combination table, and compares the number of available epochs of the baseline corresponding to the adjusted baseline frequency combination until the number of available epochs of the sequentially selected baseline meets the requirements of the baseline solution. It can be determined that the solution mode corresponding to the sequentially selected frequency combination can be output as the baseline solution mode, thereby avoiding the problem that the number of available epochs of the selected baseline solution mode is insufficient to support the baseline solution process, reducing the probability of baseline solution errors or anomalies, and increasing the probability of normal operation of the baseline solution.

[0033] As a preferred example, the selecting, in the order of the frequency combination table, the next frequency combination corresponding to the frequency combination of the baseline available epoch number as the baseline frequency combination includes:

[0034] If the baseline frequency point combination is the fourth frequency point combination, a program error signal is triggered and a corresponding error report is generated.

[0035] If the currently selected baseline frequency combination is the fourth frequency combination, that is, according to the order of the frequency combination table, the fourth frequency combination is ranked fourth in the table, and is also the last frequency combination in the table. If the current baseline frequency combination is already the fourth frequency combination, and the number of available epochs corresponding to the determined fourth frequency combination also does not meet the baseline solution requirements, it means that the number of available epochs of the initially selected baseline solution mode does not meet the baseline solution requirements, and there is no alternative solution mode, which will trigger the error signal of the solution parameter adjustment program, prompting the user to troubleshoot or update the solution parameter adjustment program, thereby improving the troubleshooting efficiency of the program.

[0036] As a preferred example, the comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result further includes:

[0037] When there are multiple third comparison results and the number of available epochs of the baseline is greater than or equal to the epoch number threshold, it is determined to select the fourth solution mode output as the baseline solution mode; wherein the fourth solution mode is an ionosphere-free dual-frequency solution mode.

[0038] If the third comparison result is not a comparison result, it means that the corresponding baseline frequency point combination includes multiple frequency point combinations. Therefore, when determining the comparison result, it is necessary not only to confirm each comparison result, but also to classify each comparison result. As long as there is a third comparison result among the multiple comparison results obtained, and the number of available epochs for the baseline is greater than or equal to the epoch number threshold, it means that the solution mode suitable for the baseline to be solved is the fourth solution mode, that is, the ionosphere-free dual-frequency solution mode, so as to reduce the ionospheric interference when solving the baseline and improve the solution accuracy and precision of the baseline.

[0039] As a preferred example, determining the sampling interval according to the baseline observation duration includes:

[0040] Comparing the baseline observation duration with a plurality of preset observation duration thresholds in sequence;

[0041] The sampling interval is determined according to a plurality of fourth comparison results.

[0042] Since the smaller the sampling interval, the more data involved in the solution, the slower the solution speed, that is, the lower the solution efficiency, therefore, in order to reduce the solution time and improve the solution efficiency, when selecting the baseline sampling interval, the number of available epochs of the determined baseline solution mode will be used, that is, the corresponding baseline observation time will be obtained, and the corresponding sampling interval will be determined according to the determined baseline observation time, thereby improving the applicability and matching degree between the determined sampling interval and the solution mode.

[0043] By comparing the determined baseline observation duration with multiple observation duration thresholds in turn, the specific position of the baseline observation duration corresponding to the baseline solution mode is determined in turn, that is, the baseline observation duration is determined to be specifically located in multiple observation duration time periods divided by multiple observation duration thresholds, and the sampling interval of the baseline to be solved is selected based on the comparison result, that is, the specific position of the baseline observation duration. By continuously comparing the baseline observation duration with multiple observation duration thresholds, it is determined between which two observation duration thresholds the baseline observation duration is specifically located, and then the sampling interval corresponding to the baseline observation duration is determined.

[0044] Accordingly, an embodiment of the present invention further provides a device for adjusting baseline solution parameters, the device comprising an observation data acquisition module, a frequency combination selection module, a solution mode determination module, a sampling interval determination module and an adjustment scheme output module; wherein:

[0045] The observation data acquisition module is used to acquire the observation data of the baseline to be solved;

[0046] The frequency point combination selection module is used to obtain a baseline length according to the observation data, and select a baseline frequency point combination according to the baseline length;

[0047] The solution mode determination module is used to obtain the number of baseline available epochs according to the baseline frequency point combination, and determine the baseline solution mode according to the number of baseline available epochs;

[0048] The sampling interval determination module is used to obtain the observation duration according to the baseline solution mode, and determine the sampling interval according to the observation duration;

[0049] The adjustment scheme output module is used to integrate the sampling interval and the baseline solution mode and output them as a parameter adjustment scheme for the baseline to be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 : A flowchart of an embodiment of a method for adjusting baseline solution parameters provided by the present invention;

[0051] Figure 2 : A structural diagram of an embodiment of a device for adjusting baseline solution parameters provided by the present invention;

[0052] Figure 3 :A flow chart of an embodiment of the synchronous observation data statistical analysis method provided by the present invention;

[0053] Figure 4 : A flowchart of an embodiment of a method for determining a baseline solution mode provided by the present invention;

[0054] Figure 5 : A flow chart of an embodiment of the sampling interval determination method provided by the present invention. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] Embodiment 1

[0057] Please refer to Figure 1 , which is a flow chart of an embodiment of a method for adjusting baseline solution parameters provided by the present invention, including steps 101 to 105, each of which is specifically as follows:

[0058] Step 101: Obtain observation data of the baseline to be solved.

[0059] The baseline solution parameter adjustment method provided in the embodiment of the present invention first needs to obtain the observation data of the baseline to be solved as reference data when selecting the solution mode and sampling interval of the baseline to be solved. By analyzing the observation data obtained from the baseline to be solved, a solution mode more suitable for the baseline to be solved and a sampling interval more suitable for the baseline solution mode are determined, thereby improving the solution accuracy and solution efficiency of the baseline to be solved.

[0060] In this embodiment, in order to achieve the optimal determination of the subsequent baseline solution mode, this embodiment also provides a method for statistics and analysis of the synchronous observation data of the baseline to be solved, which provides a data basis for obtaining the observation data of the baseline to be solved from the synchronous observation data. Figure 3 , Figure 3 The flowchart of an embodiment of the synchronous observation data statistical analysis method provided by the present invention. Figure 3 As shown in the figure, before obtaining the observation data of the baseline to be solved, the synchronous observation data of the baseline to be solved will also be counted and analyzed. The specific steps are as follows:

[0061] A1 Read epoch data: read the two observation files that form the baseline to be solved, determine the synchronous observation time of the two observation files, and then read the synchronous observation epoch data in the two observation files respectively.

[0062] A2 combined frequency points: Since each epoch may contain data of multiple frequency points, the baseline solution mode can support various combinations such as single-frequency, dual-frequency and triple-frequency, such as the common L1 single-frequency, L1 L2 dual-frequency, L1 L3 dual-frequency and L1 L2L3 triple-frequency and ionosphere-free dual-frequency solution modes. Therefore, for each epoch data, it is necessary to count the actual situation of the corresponding frequency points according to different solution modes.

[0063] A3 Reading satellite data: Since a single epoch may contain data from multiple satellites, they need to be classified according to the navigation system and read one by one.

[0064] A4 reads the signal-to-noise ratio: obtains the signal-to-noise ratio data of each frequency point. Since the lower the signal-to-noise ratio, the greater the noise interference of the corresponding frequency point, using the frequency point data with a low signal-to-noise ratio to participate in the solution may cause a large error. Therefore, it is necessary to read the signal-to-noise ratio data of each frequency point in the frequency point combination. If the signal-to-noise ratio is too low, skip the current frequency point combination, that is, exclude the frequency point data with a low signal-to-noise ratio.

[0065] A5 Calculate multipath effect: Combine the carrier pseudorange data of two frequencies to calculate the multipath effect of each frequency. The larger the multipath effect, the more serious the shielding of the corresponding frequency. Therefore, if you continue to use the frequency data with large multipath effect, it may also cause large errors. Therefore, it is necessary to read the carrier pseudorange of each frequency in the frequency combination and calculate the multipath effect of each frequency. If the multipath effect is too serious, skip the current frequency combination, that is, exclude the frequency data with large multipath effect.

[0066] After eliminating the multipath effect of the current frequency point data, it is determined whether the reading of all satellites has been completed. If it is determined to be negative, the process returns to step A3 to read the next satellite data; if it is determined to be positive, step A6 is executed.

[0067] A6 Count the number of satellites: Count the number of satellites that meet the conditions of signal-to-noise ratio and multipath effect in the current frequency combination, and each navigation system needs at least 4 satellites to complete positioning.

[0068] After completing the counting of the number of satellites, it is determined whether the number of satellites is sufficient, that is, whether the number of satellites meets the positioning requirements. If it is determined to be no, it returns to step A2 to perform frequency combination; if it is determined to be yes, it executes step A7.

[0069] A7 records the frequency combination result: If the number of satellites in the current frequency combination is sufficient, the current epoch can be solved using the current frequency combination and the current frequency combination is recorded.

[0070] After completing the recording of the current frequency point combination result, it is determined whether all frequency points have been combined. If it is determined to be negative, the process returns to step A2 to perform frequency point combination; if it is determined to be positive, step A8 is executed.

[0071] A8 records epoch results: When all frequency combinations are tested, all frequency combinations that meet the conditions and epoch time of the current epoch are recorded.

[0072] After completing the recording of the epoch results, it is determined whether all epochs have been read. If it is determined to be negative, the process returns to step A1 to read the epoch data; if it is determined to be positive, the process proceeds to step A9.

[0073] A9 counts the number of available epochs for frequency combinations: Counts all epoch results, and counts the number of epochs that meet the conditions for each frequency combination, and then calculates the number of available epochs for each frequency combination.

[0074] After completing the statistical analysis of the above-mentioned synchronous observation data, the observation data required for step 101 of the embodiment can be obtained, including the baseline length, and the relevant data on the number of available epochs corresponding to each frequency point combination required for the subsequent baseline solution mode judgment, so as to provide reference data for the subsequent determination of the baseline solution mode and sampling interval that are more suitable for the baseline to be solved.

[0075] Step 102: Obtain a baseline length according to the observation data, and select a baseline frequency point combination according to the baseline length.

[0076] In this embodiment, after the approximate length of the baseline, ie, the baseline length, is obtained by calculating the observed data of the baseline to be solved, the frequency point combination suitable for the baseline to be solved, ie, the baseline frequency point combination, can be determined according to the obtained baseline length.

[0077] In this embodiment, in order to make the method for determining the baseline solution mode more specific and clear, see Figure 4 , Figure 4 The following is a flow chart of an embodiment of the method for determining the baseline solution mode provided by the present invention. Figure 4 As shown, firstly, step B1 is performed: calculating the approximate length of the baseline, that is, the baseline length is used as the basic data for the subsequent selection of the baseline solution mode.

[0078] Specifically, the observation data in this embodiment obtains a baseline length, and selects a baseline frequency point combination according to the baseline length, including:

[0079] Calculating and acquiring the baseline length according to the approximate coordinates in the observation data, and comparing the baseline length with a preset first baseline length threshold to obtain a first comparison result;

[0080] When the first comparison result is that the baseline length is less than the first baseline length threshold, outputting the first frequency point combination as the baseline frequency point combination according to the order of the frequency point combination table;

[0081] The frequency point combination table includes a first frequency point combination, a second frequency point combination, a third frequency point combination and a fourth frequency point combination.

[0082] In order to improve the accuracy of the baseline solution results and select a solution mode that is more suitable for the baseline to be solved, the solution parameter adjustment method provided by the present invention first calculates the approximate coordinates in the observation data when selecting the frequency point combination, obtains the approximate length of the baseline to be solved, that is, the baseline length, and compares the baseline length with the preset first baseline length threshold, and selects the corresponding baseline frequency point combination according to the comparison result. If the comparison result shows that the baseline length is less than the first baseline length threshold, it means that the current ionosphere does not interfere significantly with the solution process, and the single-frequency solution mode can be used for solution, which improves the solution efficiency and solution accuracy of the baseline solution.

[0083] The first frequency point combination in the frequency point combination table provided in the embodiment of the present invention is the L1 frequency point combination corresponding to the L1 single-frequency solution mode, while the second frequency point combination, the third frequency point combination and the fourth frequency point combination are all frequency point combinations corresponding to the dual-frequency solution mode. Among them, the second frequency point combination is the L1L2 frequency point combination, the third frequency point combination is the L1L3 frequency point combination, and the fourth frequency point combination is the ionosphere-free dual-frequency point combination. Therefore, only the first frequency point combination ranked first in the frequency point combination table can be used as the selected baseline frequency point combination, that is, the frequency point combination corresponding to the single-frequency solution mode can be selected as the baseline frequency point combination, that is, the solution mode corresponding to the first frequency point combination is selected as the baseline solution mode.

[0084] See Figure 4 After the baseline length is calculated and obtained in step B1, the baseline length is compared with 1km to determine whether the baseline length is greater than 1km. In this embodiment, the first baseline length threshold is preferably 1km. The user can adjust the specific value of the first baseline length threshold according to actual conditions.

[0085] If it is determined that the baseline length is less than the first baseline length threshold, execute B2: Check the number of available epochs of the L1 frequency combination. If the baseline length is less than 1 km, it means that the ionosphere of the baseline does not interfere with the solution process significantly. Therefore, only the L1 single-frequency solution mode can be used for solution, that is, the L1 frequency combination is selected as the baseline frequency combination. However, it is necessary to check whether the number of available epochs of the L1 frequency combination, that is, the first frequency combination, is sufficient to determine whether the L1 single-frequency solution mode can be used as the baseline solution mode.

[0086] In addition, this embodiment calculates and obtains the baseline length according to the approximate coordinates in the observation data, compares the baseline length with a preset first baseline length threshold to obtain a first comparison result, and further includes:

[0087] When the first comparison result is that the baseline length is greater than or equal to the first baseline length threshold, the baseline length is compared with a preset second baseline length threshold to obtain a second comparison result;

[0088] When the second comparison result is that the baseline length is less than the second baseline length threshold, the second frequency point combination is output as the baseline frequency point combination according to the order of the frequency point combination table.

[0089] If the comparison result shows that the baseline length is greater than the first baseline length threshold, the baseline length is compared with the second baseline length threshold to determine whether the baseline length of the baseline to be solved requires the use of an ionosphere-free dual-frequency solution mode to eliminate ionospheric interference, thereby improving the precision and accuracy of the solution results.

[0090] When the baseline length is less than the second baseline length threshold, it means that there is no need to adopt the ionosphere-free dual-frequency solution mode, but only needs to select the second-ranked second frequency point combination as the baseline frequency point combination according to the order of the frequency point combination table, that is, the second frequency point combination corresponding to the L1 L2 dual-frequency solution mode needs to be used as the baseline frequency point combination.

[0091] See Figure 4 If the baseline length is greater than the first baseline length threshold, the baseline length is compared twice, that is, Figure 4 The baseline length is compared with the second baseline length threshold to determine whether to use the second frequency point combination as the baseline frequency point combination. In this embodiment, the second baseline length threshold is preferably 10 km.

[0092] If it is determined that the baseline length is less than the second baseline length threshold, execute B3: Check the number of available epochs of the L1L2 frequency combination. If it is determined that the approximate length of the baseline is greater than 1km but less than 10km, or the number of available epochs of the L1 single-frequency solution mode is insufficient, it can be adjusted to use the L1 L2 dual-frequency solution mode, that is, select the second frequency combination as the baseline frequency combination. Similarly, it is necessary to check whether the number of available epochs of the L1L2 frequency combination, that is, the second frequency combination, is sufficient before determining whether the L1L2 dual-frequency solution mode can be used as the baseline solution mode.

[0093] Furthermore, this embodiment compares the baseline length with a preset second baseline length threshold to obtain a second comparison result, and further includes:

[0094] When the second comparison result is that the baseline length is greater than or equal to the second baseline length threshold, the second frequency point combination, the third frequency point combination and the fourth frequency point combination are output as the baseline frequency point combination.

[0095] If the comparison result shows that the baseline length is greater than the second baseline length threshold, it means that the ionosphere-free dual-frequency solution mode is needed to solve the baseline. Correspondingly, the ionosphere-free dual-frequency solution mode is used as the fourth solution mode, and its corresponding frequency point combination includes the frequency point combination corresponding to all dual-frequency solution modes, that is, the second frequency point combination, the third frequency point combination and the fourth frequency point combination. Therefore, if the comparison result shows that the baseline length is greater than the second baseline length threshold, the second frequency point combination, the third frequency point combination and the fourth frequency point combination are integrated and output as the baseline frequency point combination for subsequent comparison of the number of available epochs.

[0096] See Figure 4 If the baseline length is greater than the second baseline length threshold, the Figure 4As shown in B5: Check the number of available epochs for the frequency combinations of L1L2, L1L3 and L2L3. This means that if the approximate length of the baseline, i.e. the baseline length, is greater than 10km, it can be adjusted to use the ionosphere-free dual-frequency solution mode, i.e. the fourth solution mode. Correspondingly, the frequency combination corresponding to the fourth solution mode at this time includes the second frequency combination, i.e. the L1L2 frequency combination, the third frequency combination, i.e. the L1L3 frequency combination, and the fourth frequency combination, i.e. all ionosphere-free dual-frequency combinations including the L2L3 frequency combination. Therefore, if it is judged that the baseline length is greater than the second baseline length threshold, the second frequency combination, the third frequency combination and the fourth frequency combination are integrated and output as the baseline frequency combination to perform the subsequent epoch number comparison process.

[0097] Step 103: Acquire the number of available epochs of the baseline according to the baseline frequency point combination, and determine the baseline solution mode according to the number of available epochs of the baseline.

[0098] After the baseline frequency combination is determined, the number of available epochs corresponding to the combination can be obtained as the number of available epochs for the baseline according to the baseline frequency combination, and the corresponding baseline solution mode can be further determined according to the determined number of available epochs for the baseline, thereby improving the baseline solution efficiency.

[0099] In this embodiment, different solution modes have their own advantages and disadvantages. Among them, the single-frequency solution mode has a faster solution rate and higher accuracy, but the single-frequency solution mode is difficult to eliminate the ionospheric interference of the baseline. Therefore, when the baseline length is long, if the single-frequency solution mode is still used, the corresponding solution accuracy will be reduced. Correspondingly, when solving a baseline with a long baseline length, a dual-frequency or multi-frequency solution mode should be used to eliminate ionospheric interference as much as possible, thereby improving the accuracy of the baseline solution result. When determining the solution mode, the baseline solution parameter adjustment method provided in this embodiment needs to consider the actual situation of the baseline, and select the solution mode that best suits the baseline as the baseline solution mode in combination with the statistics of the epochs available for the frequency point combination.

[0100] See Figure 4 After the baseline frequency combination is determined, as shown in B2, B3 and B4, it is necessary to determine the number of available epochs for the corresponding baseline frequency combination to determine whether the number of available epochs is sufficient, that is, whether the number of available epochs of the baseline frequency combination meets the requirements of baseline solution.

[0101] If the requirements are met, execute B6 accordingly: use the L1 single-frequency solution mode, specifically: if the number of available epochs of the L1 frequency point combination, i.e., the first frequency point combination, is sufficient, then set the baseline solution mode to the L1 single-frequency solution mode, i.e., the first solution mode;

[0102] B7: Use the L1 L2 dual-frequency solution mode. Specifically, if the number of available epochs of the L1 L2 frequency point combination, i.e., the second frequency point combination, is sufficient, then the baseline solution mode is set to the L1 L2 dual-frequency solution mode, i.e., the second solution mode.

[0103] B8: Use the L1 L3 dual-frequency solution mode. Specifically, if the number of available epochs of the L1 L3 frequency point combination, i.e., the third frequency point combination, is sufficient, then the baseline solution mode is set to the L1 L3 dual-frequency solution mode, i.e., the third solution mode.

[0104] Furthermore, this embodiment determines the baseline solution mode according to the number of available epochs of the baseline, including:

[0105] Comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result;

[0106] When the third comparison result is that the number of available epochs of the baseline is greater than or equal to the epoch number threshold, the solution mode corresponding to the number of available epochs of the baseline is output as the baseline solution mode.

[0107] After determining the baseline frequency combination, the number of available epochs corresponding to the combination can be obtained as the baseline available epoch number according to the baseline frequency combination. After obtaining the baseline available epoch number, the epoch number is compared with the epoch number threshold to determine whether the baseline available epoch number meets the requirements of baseline solution. Only when it is determined that the baseline available epoch number meets the requirements of baseline solution can the solution mode corresponding to the baseline frequency combination be output as the baseline solution mode to improve the baseline solution precision and accuracy.

[0108] In addition, this embodiment compares the baseline available epoch number with the epoch number threshold to obtain a third comparison result, and further includes:

[0109] When the third comparison result is that the number of available epochs of the baseline is less than the epoch number threshold, the next frequency point combination of the frequency point combination corresponding to the number of available epochs of the baseline is selected as the baseline frequency point combination in the order of the frequency point combination table, and the baseline solution mode is determined according to the number of available epochs of the baseline corresponding to the baseline frequency point combination.

[0110] However, if the comparison result shows that the number of available epochs of the baseline corresponding to the selected baseline frequency combination does not meet the requirements of the baseline solution, the solution mode corresponding to the selected baseline frequency combination cannot be output as the baseline solution mode. The solution parameter adjustment method provided by the present invention selects the next frequency combination of the current baseline frequency combination as the baseline frequency combination in the order of the frequency combination table, and compares the number of available epochs of the baseline corresponding to the adjusted baseline frequency combination until the number of available epochs of the sequentially selected baseline meets the requirements of the baseline solution. It can be determined that the solution mode corresponding to the sequentially selected frequency combination can be output as the baseline solution mode, thereby avoiding the problem that the number of available epochs of the selected baseline solution mode is insufficient to support the baseline solution process, reducing the probability of baseline solution errors or anomalies, and increasing the probability of normal operation of the baseline solution.

[0111] See Figure 4 If it is determined that the number of available epochs of the baseline corresponding to the current baseline frequency combination is insufficient to support the subsequent baseline solution process, the frequency combination of the next level will be adjusted to the baseline frequency combination in sequence, such as Figure 4 As shown in FIG. 1 , if the number of available epochs of the L1 frequency point combination, i.e., the first frequency point combination, is insufficient, then the L1 L2 frequency point combination, i.e., the second frequency point combination, is used as the baseline frequency point combination, and it is determined whether the number of available epochs of the second frequency point combination meets the requirement. If the second frequency point combination, i.e., Figure 4 The number of available epochs for the L1 L2 frequency combination shown in the figure still does not meet the requirement, so the third frequency combination, Figure 4 The L1 L3 frequency combination shown is adjusted to the baseline frequency combination, and it is determined whether the number of available epochs corresponding to the third frequency combination meets the requirements.

[0112] Furthermore, this embodiment selects the next frequency point combination of the frequency point combination corresponding to the number of available epochs of the baseline as the baseline frequency point combination according to the order of the frequency point combination table, including:

[0113] If the baseline frequency point combination is the fourth frequency point combination, a program error signal is triggered and a corresponding error report is generated.

[0114] If the currently selected baseline frequency combination is the fourth frequency combination, that is, according to the order of the frequency combination table, the fourth frequency combination is ranked fourth in the table, and is also the last frequency combination in the table. If the current baseline frequency combination is already the fourth frequency combination, and the number of available epochs corresponding to the determined fourth frequency combination also does not meet the baseline solution requirements, it means that the number of available epochs of the initially selected baseline solution mode does not meet the baseline solution requirements, and there is no alternative solution mode, which will trigger the error signal of the solution parameter adjustment program, prompting the user to troubleshoot or update the solution parameter adjustment program, thereby improving the troubleshooting efficiency of the program.

[0115] See Figure 4 When it is determined that the current baseline frequency combination is the fourth frequency combination, and it is determined that the number of available epochs corresponding to the fourth frequency combination still does not meet the requirements, execute B10: error reporting, specifically: if it is determined that the number of available epochs of the initially selected baseline solution mode is insufficient, and there are no other alternative solution modes, the program reports an error and triggers a corresponding program error signal, and also generates a corresponding error report and sends it to the user for error tracing.

[0116] In addition, this embodiment compares the baseline available epoch number with the epoch number threshold to obtain a third comparison result, and further includes:

[0117] When there are multiple third comparison results and the number of available epochs of the baseline is greater than or equal to the epoch number threshold, it is determined to select the fourth solution mode output as the baseline solution mode; wherein the fourth solution mode is an ionosphere-free dual-frequency solution mode.

[0118] If the third comparison result is not a comparison result, it means that the corresponding baseline frequency point combination includes multiple frequency point combinations. Therefore, when determining the comparison result, it is necessary not only to confirm each comparison result, but also to classify each comparison result. As long as there is a third comparison result among the multiple comparison results obtained, and the number of available epochs for the baseline is greater than or equal to the epoch number threshold, it means that the solution mode suitable for the baseline to be solved is the fourth solution mode, that is, the ionosphere-free dual-frequency solution mode, so as to reduce the ionospheric interference when solving the baseline and improve the solution accuracy and precision of the baseline.

[0119] See Figure 4 If there are multiple third comparison results, and one of the multiple comparison results has a third comparison result for which the number of available epochs for the baseline is greater than or equal to the epoch number threshold, specifically: check whether the number of available epochs for the L1 L2, L1 L3, and L2L3 frequency point combinations is sufficient, that is, judge whether the number of available epochs for the second frequency point combination, the third frequency point combination, and the fourth frequency point combination is sufficient.

[0120] And if it is determined that the number of available epochs corresponding to any of the above three frequency combinations is sufficient, execute B9: use the ionosphere-free dual-frequency solution mode, that is, the fourth solution mode. Specifically: as long as the number of available epochs of any frequency combination among L1 L2, L1 L3 and L2L3 is sufficient, the ionosphere-free dual-frequency solution mode can be used. Among them, in this embodiment, the L1 L2 frequency combination is preferably the second frequency combination, the L1 L3 frequency combination is the third frequency combination, and the L2L3 frequency combination is the fourth frequency combination, but the fourth frequency combination does not only include the L2L3 frequency combination, and its fourth frequency combination as an ionosphere-free dual-frequency combination includes all remaining ionosphere-free dual-frequency combinations except the first frequency combination, the second frequency combination and the third frequency combination.

[0121] Step 104: Obtain a baseline observation duration according to the baseline solution mode, and determine a sampling interval according to the baseline observation duration.

[0122] After determining the baseline solution mode of the baseline to be solved, the appropriate sampling interval can be determined according to the determined baseline solution mode. Since the smaller the sampling interval, the more data involved in the baseline solution, and the slower the baseline solution speed. Therefore, in order to minimize the solution time and improve the baseline solution efficiency, the solution parameter adjustment method provided by the present invention will determine the appropriate sampling interval according to the number of available epochs in the solution mode.

[0123] Specifically, this embodiment determines the sampling interval according to the baseline observation duration, including:

[0124] Comparing the baseline observation duration with a plurality of preset observation duration thresholds in sequence;

[0125] The sampling interval is determined according to a plurality of fourth comparison results.

[0126] Since the smaller the sampling interval, the more data involved in the solution, the slower the solution speed, that is, the lower the solution efficiency, therefore, in order to reduce the solution time and improve the solution efficiency, when selecting the baseline sampling interval, the number of available epochs of the determined baseline solution mode will be used, that is, the corresponding baseline observation time will be obtained, and the corresponding sampling interval will be determined according to the determined baseline observation time, thereby improving the applicability and matching degree between the determined sampling interval and the solution mode.

[0127] By comparing the determined baseline observation duration with multiple observation duration thresholds in turn, the specific position of the baseline observation duration corresponding to the baseline solution mode is determined in turn, that is, the baseline observation duration is determined to be specifically located in multiple observation duration time periods divided by multiple observation duration thresholds, and the sampling interval of the baseline to be solved is selected based on the comparison result, that is, the specific position of the baseline observation duration. By continuously comparing the baseline observation duration with multiple observation duration thresholds, it is determined between which two observation duration thresholds the baseline observation duration is specifically located, and then the sampling interval corresponding to the baseline observation duration is determined.

[0128] See Figure 5 , Figure 5 Flow chart of an embodiment of the method for determining the sampling interval provided by the present invention. Figure 5 As shown in FIG. 1 , after the baseline solution mode is determined, C1 is first executed: the observation time of the frequency point combination corresponding to the solution mode is calculated. Specifically, the observation time applicable to the current baseline solution mode can be calculated by the ratio of the number of baseline available epochs to the total number of epochs of the baseline frequency point combination corresponding to the baseline solution mode, combined with the synchronous observation time of the baseline, and the corresponding sampling interval can be further determined by the baseline observation time of the baseline solution mode.

[0129] By comparing the observation time with multiple observation time thresholds in sequence, specifically: first compare the observation time with the first observation time threshold, i.e. Figure 5 If the comparison result shows that the observation time is less than the first observation time threshold, Figure 5 As shown in 2min, execute Figure 5 C2 shown: the sampling interval is set to 1s, specifically: if the baseline observation time of the baseline solution mode is less than 2 minutes, the sampling interval is set to 1s.

[0130] If the comparison result shows that the observation time is greater than or equal to the first observation time threshold, the observation time is compared with the second observation time threshold in sequence. Figure 5 If the comparison result shows that the observation time is less than the second observation time threshold, Figure 5 If 6 minutes is shown, execute Figure 5 As shown in C3: the sampling interval is set to 5s, specifically: if the baseline observation time of the baseline solution mode is greater than 2 minutes but less than 6 minutes, the sampling interval is set to 5s.

[0131] If the comparison result shows that the observation time is greater than or equal to the second observation time threshold, the observation time is compared with the third observation time threshold in order. Figure 5 If the comparison result shows that the observation time is less than the third observation time threshold, Figure 5 If 120 minutes is shown, execute Figure 5C4 shown: the sampling interval is set to 10s, specifically: if the baseline observation time of the baseline solution mode is greater than 6 minutes but less than 120 minutes, the sampling interval is set to 10s.

[0132] If the comparison result shows that the observation time is greater than or equal to the third observation time threshold, the observation time is compared with the fourth observation time threshold in order. Figure 5 If the comparison result shows that the observation time is less than the third observation time threshold, Figure 5 If 480 minutes is shown, execute Figure 5 C5 shown: the sampling interval is set to 30s, specifically: if the baseline observation time of the baseline solution mode is greater than 120 minutes but less than 480 minutes, the sampling interval is set to 30s.

[0133] If the comparison result shows that the observation time is greater than or equal to the fourth observation time threshold, execute Figure 5 C6 shown: The sampling interval is set to 60s. Specifically, if the baseline observation time of the baseline solution mode is greater than 480 minutes, the sampling interval is set to 60s.

[0134] Step 105: Integrate the sampling interval and the baseline solution mode and output them as a solution parameter adjustment scheme for the baseline to be solved.

[0135] After the baseline solution mode and sampling interval are determined, the determined baseline solution mode and sampling interval can be integrated into a parameter adjustment scheme for the baseline to be solved and output, so that the user can adjust the baseline solution parameters of the baseline to be solved according to the parameter adjustment method, thereby improving the solution accuracy, solution precision and solution efficiency of the baseline to be solved.

[0136] The baseline solution parameter adjustment method provided by the embodiment of the present invention first calculates the observation data of the baseline to be solved. Determine its baseline length, then select a suitable baseline frequency combination according to the determined baseline length, and then obtain the corresponding number of available epochs according to the selected baseline frequency combination, so as to determine whether the number of available epochs corresponding to the baseline frequency combination meets the solution requirements, so as to determine whether the solution mode corresponding to the current baseline frequency combination can be used as the baseline solution mode of the baseline to be solved. The solution mode that is more suitable for solving the baseline is selected through the observation data of the baseline to be solved, thereby improving the accuracy of the baseline solution result. And according to the determined baseline solution mode, the observation time is calculated and obtained, and then the appropriate sampling interval is selected as the sampling interval corresponding to the baseline according to the observation time, that is, the corresponding sampling interval is selected through the determined baseline solution mode, thereby improving the baseline solution efficiency. The solution parameters that are more suitable for solving the baseline are selected through the observation data of the baseline, including the solution mode and the sampling interval, thereby improving the accuracy of the baseline solution result and the baseline solution efficiency.

[0137] In order to better illustrate the working principle and step flow of a method and device for adjusting baseline solution parameters of the present invention, reference may be made to, but is not limited to, the relevant records above.

[0138] Accordingly, see Figure 2 , Figure 2 This is a structural diagram of an embodiment of the device for adjusting the baseline solution parameters provided by the present invention. Figure 2 As shown, the adjustment device includes an observation data acquisition module 201, a frequency combination selection module 202, a solution mode determination module 203, a sampling interval determination module 204 and an adjustment scheme output module 205; wherein:

[0139] The observation data acquisition module 201 is used to acquire the observation data of the baseline to be solved.

[0140] The frequency point combination selection module 202 is used to obtain a baseline length according to the observation data, and select a baseline frequency point combination according to the baseline length.

[0141] Furthermore, the frequency point combination selection module 202 obtains a baseline length according to the observation data, and selects a baseline frequency point combination according to the baseline length, including:

[0142] Calculating and acquiring the baseline length according to the approximate coordinates in the observation data, and comparing the baseline length with a preset first baseline length threshold to obtain a first comparison result;

[0143] When the first comparison result is that the baseline length is less than the first baseline length threshold, outputting the first frequency point combination as the baseline frequency point combination according to the order of the frequency point combination table;

[0144] The frequency point combination table includes a first frequency point combination, a second frequency point combination, a third frequency point combination and a fourth frequency point combination.

[0145] Furthermore, the frequency point combination selection module 202 calculates and obtains the baseline length according to the approximate coordinates in the observation data, compares the baseline length with a preset first baseline length threshold, and obtains a first comparison result, and further includes:

[0146] When the first comparison result is that the baseline length is greater than or equal to the first baseline length threshold, the baseline length is compared with a preset second baseline length threshold to obtain a second comparison result;

[0147] When the second comparison result is that the baseline length is less than the second baseline length threshold, the second frequency point combination is output as the baseline frequency point combination according to the order of the frequency point combination table.

[0148] Furthermore, the frequency point combination selection module 202 compares the baseline length with a preset second baseline length threshold to obtain a second comparison result, and further includes:

[0149] When the second comparison result is that the baseline length is greater than or equal to the second baseline length threshold, the second frequency point combination, the third frequency point combination and the fourth frequency point combination are output as the baseline frequency point combination.

[0150] The solution mode determination module 203 is used to obtain the number of baseline available epochs according to the baseline frequency point combination, and determine the baseline solution mode according to the number of baseline available epochs.

[0151] Furthermore, the solution mode determination module 203 determines the baseline solution mode according to the number of available epochs of the baseline, including:

[0152] Comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result;

[0153] When the third comparison result is that the number of available epochs of the baseline is greater than or equal to the epoch number threshold, the solution mode corresponding to the number of available epochs of the baseline is output as the baseline solution mode.

[0154] Furthermore, the solution mode determination module 203 compares the baseline available epoch number with the epoch number threshold to obtain a third comparison result, further comprising:

[0155] When the third comparison result is that the number of available epochs of the baseline is less than the epoch number threshold, the next frequency point combination of the frequency point combination corresponding to the number of available epochs of the baseline is selected as the baseline frequency point combination in the order of the frequency point combination table, and the baseline solution mode is determined according to the number of available epochs of the baseline corresponding to the baseline frequency point combination.

[0156] Furthermore, the solution mode determination module 203 selects the next frequency point combination corresponding to the frequency point combination of the baseline available epoch number as the baseline frequency point combination according to the order of the frequency point combination table, including:

[0157] If the baseline frequency point combination is the fourth frequency point combination, a program error signal is triggered and a corresponding error report is generated.

[0158] Furthermore, the solution mode determination module 203 compares the baseline available epoch number with the epoch number threshold to obtain a third comparison result, further comprising:

[0159] When there are multiple third comparison results and the number of available epochs of the baseline is greater than or equal to the epoch number threshold, it is determined to select the fourth solution mode output as the baseline solution mode; wherein the fourth solution mode is an ionosphere-free dual-frequency solution mode.

[0160] The sampling interval determination module 204 is used to obtain the observation duration according to the baseline solution mode, and determine the sampling interval according to the observation duration.

[0161] Furthermore, the sampling interval determination module 204 determines the sampling interval according to the baseline observation duration, including:

[0162] Comparing the baseline observation duration with a plurality of preset observation duration thresholds in sequence to obtain a plurality of fourth comparison results;

[0163] The sampling interval is determined according to a plurality of the fourth comparison results.

[0164] The adjustment scheme output module 205 is used to integrate the sampling interval and the baseline solution mode and output them as a parameter adjustment scheme for the baseline to be solved.

[0165] In summary, the embodiments of the present invention provide a method and device for adjusting baseline solution parameters, which obtains the baseline length by obtaining the observation data of the baseline to be solved, selects the baseline frequency combination according to the baseline length, obtains the number of available epochs of the corresponding baseline according to the baseline frequency combination, and then determines the baseline solution mode according to the number of available epochs of the baseline, obtains the baseline observation duration through the baseline solution mode, and determines the sampling interval according to the baseline observation duration, and then integrates the sampling interval and the baseline solution mode into a solution parameter adjustment scheme for the baseline to be solved and outputs it. The solution mode that is more suitable for solving the baseline is selected through the observation data of the baseline to be solved, thereby improving the accuracy of the baseline solution result; the corresponding sampling interval is selected according to the determined baseline solution mode, thereby improving the baseline solution efficiency.

[0166] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for adjusting baseline solution parameters, characterized in that: The following steps are involved: Obtain observation data of the baseline to be solved; Acquire a baseline length according to the observation data, and select a baseline frequency point combination according to the baseline length; Acquire the number of available epochs of the baseline according to the baseline frequency point combination, and determine the baseline solution mode according to the number of available epochs of the baseline; Acquire a baseline observation duration according to the baseline solution mode, and determine a sampling interval according to the baseline observation duration; The sampling interval and the baseline solving mode are integrated and output as a solving parameter adjustment scheme for the baseline to be solved.

2. A method for adjusting baseline solution parameters as claimed in claim 1, characterized in that: The acquiring of a baseline length according to the observed data and selecting a baseline frequency point combination according to the baseline length includes: Calculating and acquiring the baseline length according to the approximate coordinates in the observation data, and comparing the baseline length with a preset first baseline length threshold to obtain a first comparison result; When the first comparison result is that the baseline length is less than the first baseline length threshold, outputting the first frequency point combination as the baseline frequency point combination according to the order of the frequency point combination table; The frequency point combination table includes a first frequency point combination, a second frequency point combination, a third frequency point combination and a fourth frequency point combination.

3. A method for adjusting baseline solution parameters as claimed in claim 2, characterized in that: The step of calculating and obtaining the baseline length according to the approximate coordinates in the observation data, and comparing the baseline length with a preset first baseline length threshold to obtain a first comparison result, further includes: When the first comparison result is that the baseline length is greater than or equal to the first baseline length threshold, the baseline length is compared with a preset second baseline length threshold to obtain a second comparison result; When the second comparison result is that the baseline length is less than the second baseline length threshold, the second frequency point combination is output as the baseline frequency point combination according to the order of the frequency point combination table.

4. A method for adjusting baseline solution parameters as claimed in claim 3, characterized in that: The step of comparing the baseline length with a preset second baseline length threshold to obtain a second comparison result further includes: When the second comparison result is that the baseline length is greater than or equal to the second baseline length threshold, the second frequency point combination, the third frequency point combination and the fourth frequency point combination are output as the baseline frequency point combination.

5. A method for adjusting baseline solution parameters according to any one of claims 2 to 4, characterized in that: Determining the baseline solution mode according to the number of available epochs of the baseline includes: Comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result; When the third comparison result is that the number of available epochs of the baseline is greater than or equal to the epoch number threshold, the solution mode corresponding to the number of available epochs of the baseline is output as the baseline solution mode.

6. A method for adjusting baseline solution parameters as claimed in claim 5, characterized in that: The step of comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result further includes: When the third comparison result is that the number of available epochs of the baseline is less than the epoch number threshold, the next frequency point combination of the frequency point combination corresponding to the number of available epochs of the baseline is selected as the baseline frequency point combination in the order of the frequency point combination table, and the baseline solution mode is determined according to the number of available epochs of the baseline corresponding to the baseline frequency point combination.

7. A method for adjusting baseline solution parameters as claimed in claim 6, characterized in that: The selecting, in the order of the frequency point combination table, the next frequency point combination corresponding to the frequency point combination of the baseline available epoch number as the baseline frequency point combination comprises: If the baseline frequency point combination is the fourth frequency point combination, a program error signal is triggered and a corresponding error report is generated.

8. A method for adjusting baseline solution parameters as claimed in claim 5, characterized in that: The step of comparing the baseline available epoch number with the epoch number threshold to obtain a third comparison result further includes: When there are multiple third comparison results and the number of available epochs of the baseline is greater than or equal to the epoch number threshold, it is determined to select the fourth solution mode output as the baseline solution mode; wherein the fourth solution mode is an ionosphere-free dual-frequency solution mode.

9. A method for adjusting baseline solution parameters as claimed in claim 1, characterized in that: The determining of the sampling interval according to the baseline observation duration includes: Comparing the baseline observation duration with a plurality of preset observation duration thresholds in sequence to obtain a plurality of fourth comparison results; The sampling interval is determined according to a plurality of the fourth comparison results.

10. A device for adjusting baseline solution parameters, characterized in that: The adjustment device includes an observation data acquisition module, a frequency combination selection module, a solution mode determination module, a sampling interval determination module and an adjustment scheme output module; wherein: The observation data acquisition module is used to acquire the observation data of the baseline to be solved; The frequency point combination selection module is used to obtain a baseline length according to the observation data, and select a baseline frequency point combination according to the baseline length; The solution mode determination module is used to obtain the number of baseline available epochs according to the baseline frequency point combination, and determine the baseline solution mode according to the number of baseline available epochs; The sampling interval determination module is used to obtain the observation duration according to the baseline solution mode, and determine the sampling interval according to the observation duration; The adjustment scheme output module is used to integrate the sampling interval and the baseline solution mode and output them as a parameter adjustment scheme for the baseline to be solved.

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