Intelligent mode switching method based on Beidou and GPS positioning

Abstract

The invention provides an intelligent mode switching method based on Beidou and GPS positioning, and relates to the technical field of satellite positioning, and the method comprises the steps: obtaining a Beidou satellite signal and a GPS satellite signal in real time, and outputting initial satellite signal data; performing noise reduction processing on the initial satellite signal data, and preprocessing the initial satellite signal data after noise reduction processing to obtain to-be-analyzed data; analyzing the to-be-analyzed data to obtain satellite signal analysis data, analyzing the satellite analysis data, and outputting a satellite signal analysis result; and obtaining a signal processing strategy and a signal processing method based on a preset result-strategy-method comparison table, carrying out signal processing and analysis on the satellite signal analysis data based on the signal processing strategy and the signal processing method, and outputting a signal positioning result. The satellite signal positioning mode and the signal processing strategy and method are intelligently switched according to the positioning requirement of the user, and the environmental adaptability of the system and the stability of the positioning function are improved.

Description

Technical Field

[0001] The present invention relates to the field of satellite positioning technology, and in particular to an intelligent mode switching method based on Beidou and GPS positioning. Background Art

[0002] The Global Positioning System (GPS) is a high-precision radio navigation positioning system based on artificial earth satellites developed and launched by the United States. Since its launch, GPS has attracted many users with its free, high-precision, all-weather, global coverage, convenience and flexibility. Beidou Navigation Satellite System (BDS, also known as COMPASS) is a global satellite navigation system independently developed by China. It is also the third mature satellite navigation system after GPS and GLONASS. After years of development, the Beidou system has become an important new infrastructure that provides all-weather, all-day, high-precision positioning, navigation and timing services to global users.

[0003] At present, GPS and Beidou are widely used in various fields. Although both positioning systems can provide convenient positioning services, the positioning mode using a single positioning system has gradually failed to meet the ever-increasing positioning needs. When the signal of a satellite system is unstable or interrupted, the positioning accuracy and even the positioning service function will be affected, which may greatly affect the user experience.

[0004] Therefore, the present invention provides an intelligent mode switching method based on Beidou and GPS positioning. Summary of the invention

[0005] The present invention provides an intelligent mode switching method based on Beidou and GPS positioning, which is used to capture and analyze the signals of Beidou satellites and GPS satellites in real time, and intelligently switch the satellite signal positioning mode and signal processing strategy and method according to the user's positioning requirements, so as to improve the environmental adaptability of the system and the stability of the positioning function.

[0006] The present invention provides an intelligent mode switching method based on Beidou and GPS positioning, comprising: Step 1: Obtain Beidou satellite signals and GPS satellite signals in real time through the preset receiving device, and output the initial satellite signal data; Step 2: performing noise reduction processing on the initial satellite signal data, and preprocessing the initial satellite signal data after the noise reduction processing using a preset preprocessing method to obtain data to be analyzed; Step 3: Analyze the data to be analyzed using a preset analysis method to obtain satellite signal analysis data, and analyze the satellite analysis data in combination with a preset data analysis module to output a satellite signal analysis result; Step 4: Based on the preset result-strategy-method comparison table, obtain the signal processing strategy and signal processing method that match the satellite signal analysis result, and perform signal processing and analysis on the satellite signal analysis data based on the signal processing strategy and signal processing method, and output the signal positioning result.

[0007] Preferably, step 1 includes: Capture Beidou satellite signals in real time through a preset receiving device and output first satellite signal data; At the same time, the GPS satellite signal is captured in real time through a preset receiving device, and the second satellite signal data is output; The first satellite signal data and the second satellite signal data are time aligned, and initial satellite signal data are output.

[0008] Preferably, performing noise reduction processing on the initial satellite signal data comprises: Extracting features from the satellite signal data to obtain a first feature set, performing feature matching on data features in the first feature set in combination with a preset noise feature database, and outputting a noise feature set; Based on the noise feature set and in combination with the feature-device matching table, a matching preset signal noise reduction device is selected in the device library; The preset signal noise reduction device is used to perform noise reduction processing on the initial satellite signal data to obtain noise-reduced satellite signal data.

[0009] Preferably, the initial satellite signal data after noise reduction is preprocessed using a preset preprocessing method to obtain data to be analyzed, including: Selecting a preset preprocessing method matching the first feature set from a method database in combination with a preset feature-method comparison table; The noise reduction satellite signal data is preprocessed based on the preset preprocessing method to obtain data to be analyzed.

[0010] Preferably, the data to be analyzed is analyzed using a preset analysis method to obtain satellite signal analysis data, including: Selecting a preset analysis method matching the first feature set from a method database in combination with the preset feature-method comparison table; The preset analysis method is used to perform data analysis on the data to be analyzed to obtain satellite signal analysis data.

[0011] Preferably, analyzing the satellite analysis data in combination with a preset data analysis module and outputting satellite signal analysis results includes: Based on the first feature set and in combination with a preset feature-index mapping table, a preset evaluation index for signal evaluation is selected from an index database, and an evaluation index set is constructed; Based on the evaluation index set and in combination with a preset data analysis module, the satellite analysis data is evaluated and analyzed, and a satellite signal analysis result is output.

[0012] Preferably, based on the evaluation index set and in combination with a preset data analysis module, the satellite analysis data is evaluated and analyzed, including: Performing category analysis on the satellite analysis data to obtain first data corresponding to the Beidou satellite signal and second data corresponding to the GPS satellite signal; At the same time, cluster analysis is performed on the evaluation index set to obtain a first index set corresponding to the satellite state, a second index set corresponding to the satellite signal state, and a third index set corresponding to the performance state of the preset receiving device; The satellite status includes the number, position, geometric distribution and health status of each real-time visible satellite; The satellite signal status includes the signal strength and signal-to-noise ratio of each received satellite signal and the multipath effect caused by the satellite signal reaching the preset receiving device through multiple paths; Based on the first indicator set, the first data, the second data and the satellite analysis data are analyzed respectively, and a first result corresponding to the Beidou satellite, a second result corresponding to the GPS satellite and a first fusion analysis result of the Beidou satellite and the GPS satellite are output, and a satellite status assessment result is comprehensively output; At the same time, based on the second indicator set, the first data, the second data and the satellite analysis data are analyzed respectively, and a third result corresponding to the Beidou satellite signal, a fourth result corresponding to the GPS satellite signal and a second fusion analysis result corresponding to the comprehensive analysis of the Beidou satellite signal and the GPS satellite signal are output, and a satellite signal quality assessment result is comprehensively output; Based on the third indicator set, the first data, the second data and the satellite analysis data are analyzed respectively to obtain a fifth result corresponding to the reception performance of the preset receiving device and the Beidou satellite signal, a sixth result corresponding to the reception performance of the GPS satellite signal and a third fusion analysis result corresponding to the comprehensive reception performance of the Beidou satellite and the GPS satellite, and comprehensively output a receiving device evaluation result; Obtaining the correlation between the preset evaluation indicators in the first indicator set, the second indicator set, and the third indicator set, and constructing an indicator relationship diagram; Based on the indicator relationship diagram, a preset data analysis module is used to comprehensively analyze the satellite status assessment results, satellite signal quality assessment results and receiving device assessment results, and a satellite signal analysis result is output.

[0013] Preferably, step 4 includes: Extracting features from the satellite signal analysis results, and constructing a second feature set based on the extracted features; At the same time, the positioning requirement information of the preset receiving device is obtained, the device positioning requirement data is output, and feature extraction is performed to obtain a third feature set; Performing feature matching on the data features in the second feature set and the data features in the third feature set, and outputting a signal-demand matching result; Combined with the preset result-factor comparison table, a screening factor corresponding to the signal-demand matching result is obtained; In combination with the preset factor-strategy-method comparison table, a signal processing strategy and a signal processing method matching the screening factor are selected from the preset strategy-method database; Acquire a mode switching strategy matching the signal processing strategy in the strategy-method database, and adjust the mode of a preset receiving device based on the mode switching strategy; ; Among them, s represents the satellite positioning mode; Indicates the mode of using Beidou satellites alone for positioning; Indicates the mode of using GPS satellites alone for positioning; Indicates a mode that combines Beidou satellite and GPS satellite signals for comprehensive positioning; Indicates the signal quality when the preset receiving device receives Beidou satellite signals alone; Indicates the minimum value required by the preset receiving device for the quality of receiving satellite signals; Indicates the signal quality when the preset receiving device receives GPS satellite signals alone; Indicates the signal quality when the preset receiving device receives Beidou satellite signals and GPS satellite signals at the same time; express Greater than Any of; At the same time, the satellite signal received during the mode adjustment process is acquired, the mode switching process data is output, and the satellite signal analysis result is updated based on the mode switching process data; Based on the signal processing strategy and signal processing method, the satellite signal analysis result is processed and analyzed, and a signal positioning result is output.

[0014] The present invention provides an intelligent mode switching method based on Beidou and GPS positioning. The present invention realizes intelligent mode switching based on Beidou and GPS positioning through processes such as signal reception, preprocessing, parsing, analysis and processing, thereby optimizing the accuracy and stability of positioning services.

[0015] The present invention can select the best satellite system according to the real-time signal quality through intelligent mode switching, thereby improving positioning accuracy, reducing user intervention, and improving user experience. At the same time, the robustness of the system is enhanced to ensure that stable positioning services can be provided in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a flow chart of an intelligent mode switching method based on Beidou and GPS positioning provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0019] like Figure 1 As shown, an embodiment of the present invention provides an intelligent mode switching method based on Beidou and GPS positioning, including: Step 1: Obtain Beidou satellite signals and GPS satellite signals in real time through the preset receiving device, and output the initial satellite signal data; Step 2: Perform noise reduction processing on the initial satellite signal data, and use a preset preprocessing method to preprocess the noise-reduced initial satellite signal data to obtain data to be analyzed; Step 3: Analyze the data to be analyzed using a preset analysis method to obtain satellite signal analysis data, and analyze the satellite analysis data in combination with a preset data analysis module to output the satellite signal analysis results; Step 4: Based on the preset result-strategy-method comparison table, obtain the signal processing strategy and signal processing method that match the satellite signal analysis results, and perform signal processing and analysis on the satellite signal analysis data based on the signal processing strategy and signal processing method, and output the signal positioning result.

[0020] In this embodiment, the preset receiving device is: a device for receiving Beidou and GPS satellite signals; In this embodiment, the initial satellite signal data: Beidou and GPS satellite signal data acquired in real time from a preset receiving device; In this embodiment, the preset preprocessing method: a method preset in advance for preprocessing the initial satellite signal data; In this embodiment, the data to be analyzed: the satellite signal data to be analyzed obtained after preprocessing; In this embodiment, the preset parsing method: a pre-set method for parsing the data to be parsed, used to extract key information from the data to be parsed; In this embodiment, satellite signal analysis data: satellite signal data obtained by analyzing using a preset analysis method; In this embodiment, a data analysis module is preset: a module for analyzing satellite signal analysis data, which can further process the data to obtain useful information; In this embodiment, the satellite signal analysis result: the satellite signal analysis result obtained after being processed by the data analysis module may include information such as signal quality and number of satellites; In this embodiment, the preset result-strategy-method comparison table: a comparison table including preset results, corresponding signal processing strategies and signal processing methods, which is used to select appropriate signal processing strategies and signal processing methods according to the analysis results; In this embodiment, the signal processing strategy: the processing strategy selected according to the satellite signal analysis result is used to guide the subsequent processing steps; In this embodiment, the signal processing method: a specific signal processing method selected according to the signal processing strategy, used to process satellite signal data, such as signal enhancement and filtering, carrier phase estimation, demodulation, clock synchronization, symbol synchronization, differential decoding, etc.; In this embodiment, the signal positioning result: the positioning result finally outputted, represents the location information or navigation information of the device.

[0021] The implementation principle and beneficial effects of this embodiment: The present invention realizes intelligent mode switching based on Beidou and GPS through a preset process, including signal reception, preprocessing, parsing, analysis and processing, and selects appropriate processing strategies and methods according to a preset table, thereby optimizing the accuracy and stability of positioning services. Through intelligent mode switching, the present invention can select the best satellite system according to the real-time signal quality, improve positioning accuracy, reduce user intervention, improve user experience, and at the same time, enhance the robustness of the system to ensure that stable positioning services can be provided in different environments.

[0022] An embodiment of the present invention provides an intelligent mode switching method based on Beidou and GPS positioning, wherein step 1 includes: Capture Beidou satellite signals in real time through a preset receiving device and output first satellite signal data; At the same time, the GPS satellite signal is captured in real time through a preset receiving device, and the second satellite signal data is output; The first satellite signal data and the second satellite signal data are time aligned, and initial satellite signal data are output.

[0023] In this embodiment, the first satellite signal data: Beidou satellite signal data captured in real time from a preset receiving device; In this embodiment, the second satellite signal data: GPS satellite signal data captured in real time from a preset receiving device; In this embodiment, time alignment: the timestamps of different satellite signal data are calibrated to ensure that the two sets of data are synchronized in time, which facilitates subsequent data processing and comparison.

[0024] The implementation principle and beneficial effects of this embodiment: The present invention captures Beidou and GPS satellite signals and time-aligns the two sets of signal data to ensure the temporal consistency of the data and avoid data confusion or errors caused by time asynchrony. This can improve the accuracy of data processing and provide an accurate time reference for subsequent data processing and analysis, thereby helping to improve the stability and reliability of the system.

[0025] An embodiment of the present invention provides an intelligent mode switching method based on Beidou and GPS positioning, which performs noise reduction processing on initial satellite signal data, including: Extracting features from satellite signal data to obtain a first feature set, performing feature matching on data features in the first feature set in combination with a preset noise feature database, and outputting a noise feature set; Based on the noise feature set and in combination with the feature-device matching table, a matching preset signal noise reduction device is selected in the device library; The initial satellite signal data is subjected to noise reduction processing using a preset signal noise reduction device to obtain noise-reduced satellite signal data.

[0026] In this embodiment, the first feature set is a feature set obtained by extracting features from satellite signal data, and is used to describe features of the signal data, such as signal strength, signal-to-noise ratio, signal frequency, signal waveform, etc.; In this embodiment, a noise feature database is preset: a database storing various noise features, which is used to match the data features in the first feature set to identify noise in the signal; In this embodiment, feature matching: comparing the data features in the first feature set with the noise features in a preset noise feature database to determine the type of noise present in the signal; In this embodiment, the noise feature set: a noise feature set obtained according to the feature matching result, used to describe the noise features existing in the signal; In this embodiment, the feature-device matching table is a matching table established according to the noise feature set and the features of the signal noise reduction devices in the device library, and is used to select the corresponding signal noise reduction device according to the noise features to improve the noise reduction efficiency and noise reduction effect; In this embodiment, the device library: a library storing various signal noise reduction devices, used to select a suitable device for signal noise reduction processing according to the noise feature set; In this embodiment, the preset signal noise reduction device is: a signal noise reduction device suitable for noise reduction processing selected according to the feature-device matching table; In this embodiment, the noise-reduced satellite signal data refers to the satellite signal data from which noise is removed after being processed by a signal noise reduction device.

[0027] Implementation principle and beneficial effects of this embodiment: The present invention realizes the noise reduction processing of satellite signal data through feature extraction, feature matching and equipment selection, which not only improves the efficiency and effect of signal noise reduction, but also improves the quality and credibility of signal data. The present invention can effectively remove noise in the signal, improve the clarity and accuracy of the data, thereby reducing interference and improving the accuracy of positioning results and navigation.

[0028] An intelligent mode switching method based on Beidou and GPS positioning provided by an embodiment of the present invention uses a preset preprocessing method to preprocess the initial satellite signal data after noise reduction processing to obtain data to be analyzed, including: Selecting a preset preprocessing method matching the first feature set from a method database in combination with a preset feature-method comparison table; The denoised satellite signal data is preprocessed based on a preset preprocessing method to obtain the data to be analyzed.

[0029] In this embodiment, the preset feature-method comparison table is a table established according to the correspondence between the features of the signal data and the preprocessing methods, and is used to select a preprocessing method suitable for a specific feature; In this embodiment, the method database is a database storing various preprocessing methods, and a preprocessing method suitable for the signal feature is selected according to the matching relationship in the preset feature-method comparison table.

[0030] The implementation principle and beneficial effects of this embodiment: The present invention selects a preprocessing method suitable for signal features by presetting a feature-method comparison table and a method database, and further processes the satellite signal data after noise reduction processing to obtain data to be analyzed. Through preprocessing, the present invention can reduce noise and interference in the data, improve the accuracy and stability of the data, help improve the performance of the system, and improve the accuracy and reliability of positioning and navigation.

[0031] An embodiment of the present invention provides an intelligent mode switching method based on Beidou and GPS positioning, which uses a preset parsing method to parse data to obtain satellite signal parsing data, including: Selecting a preset analysis method matching the first feature set from a method database in combination with a preset feature-method comparison table; The data to be analyzed is analyzed using a preset analysis method to obtain satellite signal analysis data.

[0032] In this embodiment, a pre-set parsing method is used to extract useful information from the data to be parsed to achieve functions such as positioning, navigation and timing, for example, carrier phase parsing, pseudorange parsing, Doppler frequency shift parsing, delay parsing, etc.

[0033] The implementation principle and beneficial effects of this embodiment: The present invention can select a suitable preset analysis method to analyze the data to be analyzed according to the feature matching results in the preset feature-method comparison table, thereby obtaining satellite signal analysis data. The present invention can improve the accuracy and efficiency of analysis, thereby improving the utilization rate of satellite signal data and the efficiency of information extraction, and providing support for subsequent positioning and navigation.

[0034] An intelligent mode switching method based on Beidou and GPS positioning provided by an embodiment of the present invention analyzes satellite analysis data in combination with a preset data analysis module and outputs satellite signal analysis results, including: Based on the first feature set and in combination with a preset feature-index mapping table, a preset evaluation index for signal evaluation is selected from an index database, and an evaluation index set is constructed; Based on the evaluation index set and combined with the preset data analysis module, the satellite analysis data is evaluated and analyzed, and the satellite signal analysis results are output.

[0035] In this embodiment, the preset feature-indicator mapping table includes a mapping relationship between features and evaluation indices, and is used to select preset evaluation indices for signal evaluation; In this embodiment, the indicator database: a database storing various evaluation indicators, used to select preset evaluation indicators for signal evaluation; In this embodiment, the preset evaluation index: a preset index for evaluating the satellite signal, for example, a strength index, a strong signal generally means better reception quality; a Doppler frequency shift index, which can be used to infer the moving speed and moving direction of the preset receiving device carrier; In this embodiment, the evaluation index set is an index set consisting of selected preset evaluation indexes, which is used to evaluate and analyze the satellite analysis data.

[0036] The implementation principle and beneficial effects of this embodiment: The present invention can select preset evaluation indicators according to the preset feature-indicator mapping table, evaluate and analyze the satellite analysis data in combination with the preset data analysis module, and output the analysis results of the satellite signal. The present invention analyzes the satellite signal through the evaluation indicator set, can timely discover signal quality problems, improve the accuracy and stability of positioning, provide guidance for system performance optimization, and improve the overall performance of the positioning system. At the same time, based on the evaluation results, intelligent mode switching can be realized to adapt to the positioning needs under different signal conditions and improve the intelligence level of the system.

[0037] An embodiment of the present invention provides an intelligent mode switching method based on Beidou and GPS positioning, which evaluates and analyzes satellite parsed data based on an evaluation index set and in combination with a preset data analysis module, including: Performing category analysis on the satellite analysis data to obtain first data corresponding to the Beidou satellite signal and second data corresponding to the GPS satellite signal; At the same time, cluster analysis is performed on the evaluation index set to obtain a first index set corresponding to the satellite state, a second index set corresponding to the satellite signal state, and a third index set corresponding to the preset receiving device performance state; The satellite status includes the number, position, geometric distribution and health status of each real-time visible satellite. Satellite signal status includes the signal strength, signal-to-noise ratio of each satellite signal received, and multipath effect caused by satellite signals reaching a preset receiving device through multiple paths; Based on the first indicator set, the first data, the second data and the satellite analysis data are analyzed respectively, and a first result corresponding to the Beidou satellite, a second result corresponding to the GPS satellite and a first fusion analysis result of the Beidou satellite and the GPS satellite are output, and a satellite status assessment result is comprehensively output; At the same time, based on the second indicator set, the first data, the second data and the satellite analysis data are analyzed respectively, and a third result corresponding to the Beidou satellite signal, a fourth result corresponding to the GPS satellite signal and a second fusion analysis result corresponding to the comprehensive analysis of the Beidou satellite signal and the GPS satellite signal are output, and a satellite signal quality assessment result is comprehensively output; Based on the third indicator set, the first data, the second data and the satellite analysis data are analyzed respectively to obtain a fifth result corresponding to the reception performance of the preset receiving device and the Beidou satellite signal, a sixth result corresponding to the reception performance of the GPS satellite signal and a third fusion analysis result corresponding to the comprehensive reception performance of the Beidou satellite and the GPS satellite, and a comprehensive output of the receiving device evaluation result; Obtaining the correlation between the preset evaluation indicators in the first indicator set, the second indicator set, and the third indicator set, and constructing an indicator relationship diagram; Based on the indicator relationship diagram, the preset data analysis module is used to comprehensively analyze the satellite status assessment results, satellite signal quality assessment results and receiving equipment assessment results, and the satellite signal analysis results are output.

[0038] In this embodiment, category analysis: classifying the satellite analysis data to distinguish Beidou satellite signals from GPS satellite signals, and obtaining corresponding first data and second data; In this embodiment, the first data: data related to Beidou satellite signals, for example, signal strength and delay of Beidou satellites; In this embodiment, the second data: data related to the GPS satellite signal, corresponding to the first data; In this embodiment, cluster analysis: the evaluation index set is divided according to categories to obtain index subsets related to satellite status, satellite signal status and preset receiving device performance status; In this embodiment, the first indicator set is an indicator set related to the satellite status, for example, the number, position, distance, distribution and other indicators of real-time visible satellites; In this embodiment, the second indicator set: that is, an indicator set related to the satellite signal status, for example, signal strength, signal-to-noise ratio and other indicators; In this embodiment, the third indicator set: that is, an indicator set related to the performance status of the preset receiving device, for example, indicators such as receiving sensitivity and anti-interference ability; In this embodiment, the real-time visible satellites refer to the number of satellites that can be received and identified by the preset receiving device in real time; In this embodiment, geometric distribution: the position distribution of satellites in the sky in real time, including but not limited to the elevation angle, azimuth angle and other information of the satellites; In this embodiment, health status: that is, the operating status of the satellite visible in real time, including the operating status of the satellite, whether there is any fault, etc.; In this embodiment, multipath effect: satellite signals reach the receiving device through multiple paths during propagation, causing multiple reflections and interference of the signal, which will affect the positioning accuracy; In this embodiment, the first result: the satellite status analysis result for the Beidou satellite may include data such as the number of satellites and satellite positions; In this embodiment, the second result: a satellite status analysis result for a GPS satellite, corresponding to the first result; In this embodiment, the first fusion analysis result is a result obtained by comprehensively analyzing the satellite states of Beidou satellites and GPS satellites; In this embodiment, the satellite status evaluation result: the result of comprehensively evaluating the satellite status, reflecting the working condition of the satellite system; In this embodiment, the third result: the analysis result of the Beidou satellite signal, including but not limited to the signal strength, signal-to-noise ratio and other data of each real-time visible Beidou satellite signal; In this embodiment, the fourth result: the analysis result of the GPS satellite signal, corresponding to the third result; In this embodiment, the second fusion analysis result: a result obtained by comprehensively analyzing the Beidou satellite signal and the GPS satellite signal; In this embodiment, the satellite signal quality evaluation result: a result of comprehensively evaluating the satellite signal quality, reflecting the quality of the received satellite signal; In this embodiment, the fifth result: that is, the evaluation result of the reception performance of the preset receiving device for the Beidou satellite signal, including but not limited to the receiving sensitivity of the Beidou satellite signal, the anti-interference ability of the device and other data; In this embodiment, the sixth result: the evaluation result of the reception performance of the GPS satellite signal by the preset receiving device corresponds to the fifth result; In this embodiment, the third fusion analysis result: that is, the analysis result of the reception performance of the preset receiving device for comprehensive reception of Beidou satellites and GPS satellites; In this embodiment, the receiving device evaluation result: a result of comprehensively evaluating the performance of the receiving device, reflecting the working status and performance of the receiving device; In this embodiment, the indicator relationship diagram: the correlation between the preset evaluation indicators helps to understand the influence and effect between the indicators.

[0039] The implementation principle and beneficial effects of this embodiment: The present invention performs a multi-faceted analysis and comprehensive evaluation of satellite analysis data, combines a preset data analysis module, and uses an indicator relationship diagram to perform a comprehensive analysis of various types of data, and outputs the final satellite signal analysis results. The present invention can realize intelligent mode switching of the satellite positioning system based on the comprehensive analysis results, improve the performance and stability of the positioning system, and at the same time, through evaluation of multiple aspects such as satellite status, satellite signal quality, and receiving device performance, the working status of the entire positioning system can be fully understood, and problems can be discovered and fault diagnosis can be performed in a timely manner, thereby improving the reliability and accuracy of the system.

[0040] An embodiment of the present invention provides an intelligent mode switching method based on Beidou and GPS positioning, wherein step 4 includes: Extracting features from the satellite signal analysis results, and constructing a second feature set based on the extracted features; At the same time, the positioning requirement information of the preset receiving device is obtained, the device positioning requirement data is output, and feature extraction is performed to obtain a third feature set; Perform feature matching on the data features in the second feature set and the data features in the third feature set, and output a signal-demand matching result; Combined with the preset result-factor comparison table, obtain the screening factor corresponding to the signal-demand matching result; Combined with the preset factor-strategy-method comparison table, a signal processing strategy and a signal processing method matching the screening factor are selected from the preset strategy-method database; Acquire a mode switching strategy matching the signal processing strategy in a strategy-method database, and adjust the mode of a preset receiving device based on the mode switching strategy; ; Among them, s represents the satellite positioning mode; Indicates the mode of using Beidou satellites alone for positioning; Indicates the mode of using GPS satellites alone for positioning; Indicates a mode that combines Beidou satellite and GPS satellite signals for comprehensive positioning; Indicates the signal quality when the preset receiving device receives Beidou satellite signals alone; Indicates the minimum value required by the preset receiving device for the quality of receiving satellite signals; Indicates the signal quality when the preset receiving device receives GPS satellite signals alone; Indicates the signal quality when the preset receiving device receives Beidou satellite signals and GPS satellite signals at the same time; express Greater than Any of; At the same time, the satellite signal received during the mode adjustment process is acquired, the mode switching process data is output, and the satellite signal analysis result is updated based on the mode switching process data; Based on the signal processing strategy and signal processing method, the satellite signal analysis results are processed and analyzed, and the signal positioning results are output.

[0041] In this embodiment, the second feature set: a feature data set extracted from the satellite signal analysis result; In this embodiment, positioning requirement information: information related to positioning requirements of a preset receiving device, used to guide the selection of a positioning mode, such as positioning accuracy, sensitivity, delay, response speed, etc.; In this embodiment, device positioning requirement data: data extracted according to positioning requirement information, used to match signal processing strategies and methods; In this embodiment, the third feature set: a feature data set extracted from the device positioning requirement data; In this embodiment, the signal-demand matching result: the result obtained by matching the data features of the second feature set and the data features of the third feature set; In this embodiment, the preset result-factor comparison table: a table containing the corresponding relationship between the signal-demand matching results and the screening factors, is preset; In this embodiment, screening factor: a factor determined according to the signal-demand matching result, used to select a signal processing strategy and a signal processing method; In this embodiment, the preset strategy-method database: a database including preset signal processing strategies and methods; In this embodiment, the mode switching strategy: the mode switching strategy selected according to the screening factor is used to adjust the working mode of the receiving device; In this embodiment, the mode switching process data records the satellite signal data received during the mode adjustment process and is used to update the satellite signal analysis result.

[0042] The implementation principle and beneficial effects of this embodiment: The present invention performs satellite signal processing and intelligent mode switching through feature extraction and matching, combined with preset strategies and methods, to meet the positioning requirements of the device. The present invention can realize intelligent satellite positioning mode switching according to the positioning requirements of the device and the signal quality matching results, improve positioning precision and accuracy, and can also select the most suitable positioning mode and signal processing method according to the real-time signal quality and device requirement information, which can optimize the positioning results and continuously improve the positioning performance of the system. At the same time, the present invention can flexibly adjust the working mode of the device according to different positioning requirements and signal conditions, and flexibly switch between the Beidou system and the GPS system, while ensuring the positioning accuracy, enhancing the robustness of the system and improving the adaptability and stability of the system.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent mode switching method based on Beidou and GPS positioning, characterized in that: include: Step 1: Obtain Beidou satellite signals and GPS satellite signals in real time through the preset receiving device, and output the initial satellite signal data; Step 2: performing noise reduction processing on the initial satellite signal data, and preprocessing the initial satellite signal data after the noise reduction processing using a preset preprocessing method to obtain data to be analyzed; Step 3: Analyze the data to be analyzed using a preset analysis method to obtain satellite signal analysis data, and analyze the satellite analysis data in combination with a preset data analysis module to output a satellite signal analysis result; Step 4: Based on the preset result-strategy-method comparison table, obtain the signal processing strategy and signal processing method that match the satellite signal analysis result, and perform signal processing and analysis on the satellite signal analysis data based on the signal processing strategy and signal processing method, and output the signal positioning result.

2. The intelligent mode switching method based on Beidou and GPS positioning according to claim 1, characterized in that: Step 1 includes: Capture Beidou satellite signals in real time through a preset receiving device and output first satellite signal data; At the same time, the GPS satellite signal is captured in real time through a preset receiving device, and the second satellite signal data is output; The first satellite signal data and the second satellite signal data are time aligned, and initial satellite signal data are output.

3. The intelligent mode switching method based on Beidou and GPS positioning according to claim 1, characterized in that: The initial satellite signal data is subjected to noise reduction processing, comprising: Extracting features from the satellite signal data to obtain a first feature set, performing feature matching on data features in the first feature set in combination with a preset noise feature database, and outputting a noise feature set; Based on the noise feature set and in combination with the feature-device matching table, a matching preset signal noise reduction device is selected in the device library; The preset signal noise reduction device is used to perform noise reduction processing on the initial satellite signal data to obtain noise-reduced satellite signal data.

4. The intelligent mode switching method based on Beidou and GPS positioning according to claim 3 is characterized in that: Preprocessing the initial satellite signal data after noise reduction using a preset preprocessing method to obtain data to be analyzed, including: Selecting a preset preprocessing method matching the first feature set from a method database in combination with a preset feature-method comparison table; The noise reduction satellite signal data is preprocessed based on the preset preprocessing method to obtain data to be analyzed.

5. The intelligent mode switching method based on Beidou and GPS positioning according to claim 3 is characterized in that: The data to be analyzed is analyzed using a preset analysis method to obtain satellite signal analysis data, including: Selecting a preset analysis method matching the first feature set from a method database in combination with the preset feature-method comparison table; The preset analysis method is used to perform data analysis on the data to be analyzed to obtain satellite signal analysis data.

6. The intelligent mode switching method based on Beidou and GPS positioning according to claim 3 is characterized in that: Analyze the satellite analysis data in combination with a preset data analysis module and output satellite signal analysis results, including: Based on the first feature set and in combination with a preset feature-index mapping table, a preset evaluation index for signal evaluation is selected from an index database, and an evaluation index set is constructed; Based on the evaluation index set and in combination with a preset data analysis module, the satellite analysis data is evaluated and analyzed, and a satellite signal analysis result is output.

7. The intelligent mode switching method based on Beidou and GPS positioning according to claim 6 is characterized in that: Based on the evaluation index set and in combination with the preset data analysis module, the satellite analysis data is evaluated and analyzed, including: Performing category analysis on the satellite analysis data to obtain first data corresponding to the Beidou satellite signal and second data corresponding to the GPS satellite signal; At the same time, cluster analysis is performed on the evaluation index set to obtain a first index set corresponding to the satellite state, a second index set corresponding to the satellite signal state, and a third index set corresponding to the performance state of the preset receiving device; The satellite status includes the number, position, geometric distribution and health status of each real-time visible satellite; The satellite signal status includes the signal strength and signal-to-noise ratio of each received satellite signal and the multipath effect caused by the satellite signal reaching the preset receiving device through multiple paths; Based on the first indicator set, the first data, the second data and the satellite analysis data are analyzed respectively, and a first result corresponding to the Beidou satellite, a second result corresponding to the GPS satellite and a first fusion analysis result of the Beidou satellite and the GPS satellite are output, and a satellite status assessment result is comprehensively output; At the same time, based on the second indicator set, the first data, the second data and the satellite analysis data are analyzed respectively, and a third result corresponding to the Beidou satellite signal, a fourth result corresponding to the GPS satellite signal and a second fusion analysis result corresponding to the comprehensive analysis of the Beidou satellite signal and the GPS satellite signal are output, and a satellite signal quality assessment result is comprehensively output; Based on the third indicator set, the first data, the second data and the satellite analysis data are analyzed respectively to obtain a fifth result corresponding to the reception performance of the preset receiving device and the Beidou satellite signal, a sixth result corresponding to the reception performance of the GPS satellite signal and a third fusion analysis result corresponding to the comprehensive reception performance of the Beidou satellite and the GPS satellite, and comprehensively output a receiving device evaluation result; Obtaining the correlation between the preset evaluation indicators in the first indicator set, the second indicator set, and the third indicator set, and constructing an indicator relationship diagram; Based on the indicator relationship diagram, a preset data analysis module is used to comprehensively analyze the satellite status assessment results, satellite signal quality assessment results and receiving device assessment results, and a satellite signal analysis result is output.

8. The intelligent mode switching method based on Beidou and GPS positioning according to claim 1, characterized in that: Step 4 includes: Extracting features from the satellite signal analysis results, and constructing a second feature set based on the extracted features; At the same time, the positioning requirement information of the preset receiving device is obtained, the device positioning requirement data is output, and feature extraction is performed to obtain a third feature set; Performing feature matching on the data features in the second feature set and the data features in the third feature set, and outputting a signal-demand matching result; Combined with the preset result-factor comparison table, a screening factor corresponding to the signal-demand matching result is obtained; In combination with the preset factor-strategy-method comparison table, a signal processing strategy and a signal processing method matching the screening factor are selected from the preset strategy-method database; Acquire a mode switching strategy matching the signal processing strategy in the strategy-method database, and adjust the mode of a preset receiving device based on the mode switching strategy; ； Among them, s represents the satellite positioning mode; Indicates the mode of using Beidou satellites alone for positioning; Indicates the mode of using GPS satellites alone for positioning; Indicates a mode that combines Beidou satellite and GPS satellite signals for comprehensive positioning; Indicates the signal quality when the preset receiving device receives Beidou satellite signals alone; Indicates the minimum value required by the preset receiving device for the quality of receiving satellite signals; Indicates the signal quality when the preset receiving device receives GPS satellite signals alone; Indicates the signal quality when the preset receiving device receives Beidou satellite signals and GPS satellite signals at the same time; express Greater than Any of; At the same time, the satellite signal received during the mode adjustment process is acquired, the mode switching process data is output, and the satellite signal analysis result is updated based on the mode switching process data; Based on the signal processing strategy and signal processing method, the satellite signal analysis result is processed and analyzed, and a signal positioning result is output.

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