263 results about "Satellite navigation system" patented technology

The invention relates to the technical field of unmanned aerial vehicle navigation and control, and discloses an unmanned aerial vehicle indoor and outdoor seamless navigation method fusing Beidou and visual positioning. Comprising the following steps: S1, synchronously acquiring original observation data of a Beidou satellite navigation system of an unmanned aerial vehicle, an image sequence acquired by a visual sensor and inertial data of an inertial measurement unit; s2, processing the original observation data of the Beidou satellite navigation system to obtain the position of the unmanned aerial vehicle, according to the unmanned aerial vehicle indoor and outdoor seamless navigation method and system fusing Beidou and visual positioning, through a self-adaptive fusion filter module, the fusion weight of the unmanned aerial vehicle and visual positioning is dynamically adjusted according to the Beidou signal quality; smooth transition of indoor and outdoor navigation main sources is achieved, pose jump is effectively avoided, a tight coupling depth fusion algorithm is adopted, the precision and robustness of the system are improved, the continuous and stable flight capacity of the unmanned aerial vehicle in complex indoor and outdoor environments is ensured, and the application scene is expanded.

The invention discloses a satellite navigation positioning method and device and a storage medium. The positioning method comprises the steps that observation parameters collected by a mobile terminal in a preset epoch are obtained, the observation parameters comprise GNSS parameters and inertial navigation correlation parameters, and the GNSS parameters comprise GNSS prior parameters and GNSS posterior parameters; the observation parameters are input into a preset positioning precision evaluation model, a precision evaluation value is obtained, and the positioning precision evaluation model is obtained based on training of historical observation parameters collected by multiple epochs; determining whether the positioning information represented by the current observation parameter is accurate based on the precision evaluation value; when it is determined that the positioning information is inaccurate, a positioning result is determined based on a floating point solution of integer ambiguity; and when the positioning information is determined to be accurate, determining a positioning result based on the fixed solution of the integer ambiguity. The method has the technical effect of improving the positioning precision and the positioning reliability of the global satellite navigation system.

To eliminate the influence of station position fluctuations in a satellite navigation system. [Solution] In satellite navigation systems, including the US GPS and Japan's Quasi-Zenith Satellite System, when multiple reference stations are installed to form a wide-area differential correction system (WADGPS), previously, position errors caused by fluctuations in station position would remain in the position information calculated by the user receiver.However, by adding a correction amount to the correction information provided by WADGPS in advance to cancel this, the position errors caused by fluctuations in station position at the user station can be reduced without changing the calculation processing content at the WADGPS user station, thereby improving the accuracy of the position information calculated by the user station.

The invention discloses a power distribution network fault positioning method and device based on a satellite time service inverter, and belongs to the technical field of power system fault diagnosis, and the method comprises the steps: obtaining a time service signal of a satellite navigation system, decoding the time service signal to generate a unified space-time reference, distributing the unified space-time reference to a plurality of inverter nodes in a power distribution network, and forming a cooperative measurement network; a coding sequence current signal is injected into a power distribution network line through a master control inverter node; synchronously acquiring response voltage traveling wave data by each inverter node, performing cross-correlation analysis on the response voltage traveling wave data and the coded sequence current signal, and extracting propagation time delay of each inverter node; and correcting the reference line wave velocity by using the current line parameters and the current meteorological data, and calculating fault point position data in combination with propagation time delay. According to the method, an inverter cooperative measurement network is constructed by using satellite time service, a coding sequence current signal is actively injected, and a real-time wave velocity is corrected by combining an intelligent model, so that rapid, accurate and high-reliability positioning of a power distribution network fault can be realized.

The invention relates to the technical field of urban traffic management and carbon emission reduction accounting, and provides a bus travel carbon emission reduction accounting method fused with Beidou spatio-temporal data, which comprises the following steps: acquiring spatio-temporal trajectory data based on a Beidou satellite navigation system, and constructing a passenger-trajectory-station three-dimensional correlation model for passenger flow analysis; constructing a passenger transfer analysis system based on the passenger flow analysis result; constructing a dynamic'perception-prediction-optimization 'dynamic scheduling optimization system for passenger flow detail analysis on the basis of space-time trajectory data and a reinforcement learning algorithm; and constructing a mileage-frequency distribution model and a station efficiency evaluation model based on the spatio-temporal trajectory data, respectively generating a trajectory matching optimization strategy and a differentiated station optimization scheme, and realizing adaptive optimization of the public transportation system under dynamic demand change. Compared with a traditional static data dependence method, the method achieves the dynamic and fine-grained monitoring of the operation process of the public transportation system, and effectively improves the timeliness and integrity of data.

To allow one satellite navigation receiver to simultaneously acquire calculation results based on different positioning methods, calculation conditions, or calculation parameters.SOLUTION: For a satellite navigation receiver that measures its own position using satellite navigation systems, including the GPS by the United States and Japan's Quasi-Zenith Satellite System, multiple combinations of positioning methods, calculation conditions, and calculation parameters for positioning calculations will be maintained, and each of these will be applied to a set of distance measurements using a single ranging processing circuit to perform positioning calculations, and all calculation results obtained will be output, making it possible to simultaneously obtain calculation results using different positioning methods, calculation conditions, or calculation parameters by one satellite navigation receiver.SELECTED DRAWING: Figure 1

The invention discloses an indoor and outdoor positioning method and system based on ultra wide band and satellite positioning fusion, and belongs to the technical field of indoor and outdoor positioning, and the method comprises the steps: collecting an outdoor initial coordinate of a first target through a satellite navigation system in an outdoor environment; the method comprises the following steps: in an indoor environment, continuously transmitting ultra-wideband signals to a first target through an ultra-wideband positioning system to obtain indoor relative coordinates of the first target; determining a coordinate processing strategy according to a signal intensity comparison result of the satellite navigation signal and the ultra-wideband signal; and based on a coordinate processing strategy, obtaining a final positioning coordinate by combining the outdoor initial coordinate and the indoor relative coordinate. Therefore, by implementing the application, the problem that in the prior art, indoor and outdoor high-precision positioning is difficult to realize at the same time, so that the positioning precision is greatly influenced by the movement of the positioning target can be solved.

The invention relates to the technical field of target detection and identification, and discloses a low-altitude target identification system and method combined with multi-band signal processing. Comprising the steps of establishing a cross-frequency implicit vector model and constraining a geometric scale, a scattering center and rotor harmonic waves through synchronous acquisition of an L-band radar, a Ku-band radar and a millimeter-wave radar, and realizing unified characterization of multi-frequency signals; receiving a global satellite navigation system reflection signal, communication channel state information or a very high frequency / ultrahigh frequency passive radar signal to form prior discrimination, and triggering high-frequency radar short-time imaging; carrying out propagation correction on millimeter wave, terahertz and infrared signals in combination with a meteorological profile and generating an environment label; determining a sampling window by using the region of interest and rotor phase prediction, and optimizing a residence strategy; harmonic waves are extracted from radar and acoustic signals, robust pairing is carried out, and a cross-domain consistency score output category is calculated. The method realizes multi-frequency multi-source cooperative processing, has environment self-adaption and closed-loop feedback capabilities, and can improve the precision and stability of low-altitude target identification.

The invention discloses a Beidou reference station operation state AI diagnosis and remote maintenance method, and belongs to the technical field of satellite navigation system operation and maintenance. The method comprises the following steps: acquiring reference station operation data including satellite signal quality, equipment temperature, voltage, clock error and the like, and performing exception elimination, missing value filling and de-noising processing; key features such as signal intensity fluctuation, temperature change trend and power supply stability are extracted; training a deep learning model fusing the LSTM and the CNN to perform operation state prediction; fault diagnosis and anomaly detection are carried out based on model output, and a threshold value is dynamically set; formulating a maintenance scheme according to a diagnosis result, and executing remote maintenance operation through an MQTT protocol of TLS1. 2 + bidirectional authentication; and the maintenance feedback is used for model optimization and online learning updating. According to the method, the fault identification accuracy of the reference station can be improved, the maintenance response time is shortened, and the intelligent and autonomous remote operation and maintenance capability is realized.

The invention provides an unmanned aerial vehicle multi-protocol communication anti-interference method and system based on Beidou space-time isolation. The method comprises the following steps: firstly, acquiring real-time space-time information of an unmanned aerial vehicle by using a Beidou satellite navigation system, secondly, analyzing a potential interference mode in a flight environment of the unmanned aerial vehicle based on the real-time space-time information, and generating a space-time isolation strategy according to the potential interference mode; according to the space-time isolation strategy, dynamically determining a use sequence and a switching time of a communication protocol in the multi-protocol communication system of the unmanned aerial vehicle to generate a communication control instruction, and finally applying the communication control instruction to a multi-protocol communication process of the multi-protocol communication system of the unmanned aerial vehicle to realize anti-interference operation. According to the technical scheme provided by the invention, active prediction and intelligent avoidance of communication interference are realized, and the communication reliability of the unmanned aerial vehicle in a complex electromagnetic environment is also improved.

The invention relates to a commercial vehicle (3) comprising a tractor unit (4) and a semi-trailer (5), wherein the tractor unit (4) has cameras, a satellite navigation system, side mirrors (7) and / or mirror replacement cameras (7) having a first field of view (B1), wherein a radar sensor (8) is arranged at the rear of the tractor unit (4) such that it detects a second field of view (B2) under the semi-trailer (5) or trailer, which includes an area of ​​shadowing (A) by the semi-trailer (5) lying outside the first field of view (B1), wherein the tractor unit (4) further comprises a lane change assistance system configured to monitor areas next to, behind and to the side of the commercial vehicle (3) for other vehicles (6.1 to 6.4), to determine the position, speed and acceleration of detected vehicles (6.1 to 6.4) and to predict when approaching vehicles (6.1 to 6.4) will4) are located next to or near the commercial vehicle (3), when one of the vehicles (6.1 to 6.4) enters an area critical for a lane change of the commercial vehicle (3), to issue a warning in the commercial vehicle (3), to increase a warning level of the warning issued to the driver when a direction indicator (10) of the commercial vehicle (3) is switched on, in this case then, if the vehicle (6.1 to 6.4) decelerates, to withdraw the warning or reduce the warning level, and otherwise to maintain the warning.

The invention provides a Beidou satellite navigation positioning terminal dynamic test system and method, and the system comprises a power divider which is connected with a high-precision navigation positioning antenna, and is connected with a standard global satellite navigation system high-precision positioning terminal and a tested Beidou satellite navigation positioning terminal at the same time. The signal receiving module is used for enabling the standard global satellite navigation system high-precision positioning terminal and the detected Beidou satellite navigation positioning terminal to receive consistent satellite navigation signals; the post-data resolving and processing computer is used for being connected with the standard global satellite navigation system high-precision positioning terminal and the tested Beidou satellite navigation positioning terminal and receiving and obtaining test data of the standard global satellite navigation system high-precision positioning terminal and the tested Beidou satellite navigation positioning terminal. And post-resolving processing is carried out based on the test data. The system is simple in structure, easy to deploy, reliable in test result and suitable for a dynamic test scene, and the positioning precision and the test efficiency are remarkably improved.

The invention discloses a positioning method and device for an indoor and outdoor switching process and electronic equipment. The method comprises the following steps: when a target object enters the electronic fence, detecting the signal quality of a satellite navigation system for outdoor positioning of the target object at preset time intervals, and acquiring first position information of the target object fed back by the satellite navigation system; under the condition that the signal quality does not meet the signal quality requirement, activating an ultra-wideband system for indoor positioning, and determining first target position information of the target object in each preset time period; and for each preset time period, determining second target position information of the target object and the position of the target object in the process of switching from outdoor to indoor at least according to the first position information, the first target position information, the weight of the satellite navigation system and the weight of the ultra-wideband system. According to the method and the device, the technical problems of positioning blind areas and position hopping of the target object during indoor and outdoor environment switching are solved.

The invention provides an inertial navigation aided navigation positioning method and system, and the method comprises the steps: calculating the coordinate of each navigation satellite in an ECEF coordinate system according to the satellite ephemeris of a satellite navigation system; according to the navigation satellite coordinate and the inertial navigation system positioning result, the azimuth angle and the pitch angle of the navigation satellite relative to the optical detection equipment under the ENU coordinate system are solved, and the navigation satellite is tracked; acquiring star maps collected by the optical detection equipment, matching the star maps through a star map recognition algorithm, resolving a coordinate transformation matrix between two continuous frames of star maps, and recognizing fixed stars and satellites in the star maps based on the transformation matrix; converting the identified fixed star in the field of view into an ECEF coordinate system, calculating an observation angular distance between the fixed star and the satellite, and calculating a satellite observation vector in the ECEF coordinate system according to the observation angular distance; and performing error correction on the positioning result of the inertial navigation system based on the satellite observation vector. Through the scheme, the positioning precision of the inertial navigation system can be improved, and the influence of interference deception signals is reduced.

The application discloses a kind of trusted time stamp devices, it is related to trusted time technical field, including: trusted satellite time signal receiving module, for identifying and receiving time signal from satellite navigation system provided, and through signal discrimination mechanism, resist and filter out the satellite signal of forgery or tampering, obtain trusted satellite time signal;Trusted optical fiber time signal receiving module is used to identify and receive the trusted optical fiber time signal originating from ground-based time service system, obtain trusted optical fiber time signal;Trusted NTP time signal receiving module is used to synchronize trusted NTP reference time from trusted time system with NTS protocol two-way identity authentication and encrypted mode, obtain trusted NTP time signal;Trusted time signal selection module is used to select trusted satellite time signal, optical fiber time signal and NTP time signal according to priority;Trusted time stamp verification module is used to realize the stamping and verification of time stamp;The application can ensure that the time used for stamping is trusted.

The invention relates to the technical field of power time synchronization, in particular to an anti-counterfeiting and anti-interference automatic test system and method for a satellite navigation system, and the system comprises a test simulation device which is used for generating a simulation attack signal; the automatic test system platform is used for automatically generating a scene test case according to the simulation attack signal generated by the test simulation device and generating theoretical reference data according to the scene test case; the tested anti-counterfeiting and anti-interference device is used for receiving the scene test case generated by the automatic test system platform and generating actual response data based on the test case; and the test instrument is used for comparing the theoretical reference data with the actual response data to generate a performance test report. Therefore, the problems that in the prior art, due to the fact that a detection system is backward, complex scenes are difficult to restore and manual testing has subjectivity, the error of a testing result is large, and the testing efficiency is low due to manual testing are solved.

The invention relates to the technical field of navigation and positioning, in particular to a multi-frequency phase deviation estimation and ambiguity fixing method and device.The method comprises the steps that a B2b precise orbit clock difference product is generated, then uncalibrated phase delay UPD estimation is carried out on a server side to obtain a UPD product, and therefore the UPD product is obtained on a user side; and performing multi-frequency precision single-point positioning and ambiguity fixation according to user station observation data, the B2b precision orbital clock difference product and the UPD product to obtain a multi-frequency PPP fixed solution under double systems of a Beidou satellite navigation system (BDS) and a global positioning system (GPS). Therefore, the problems that the PPP-B2b service positioning performance is not fully exerted, the precision and the convergence time need to be optimized, the availability is limited and the like due to the fact that the PPP-B2b correction number and the BDS multi-frequency observation value are not fully utilized and an adaptive multi-frequency PPP model and an ambiguity fixing method are lacked in the related technology are solved.

The invention discloses a self-adaptive integrated navigation method and system based on satellite differential signals, and belongs to the field of integrated navigation, and the method comprises the following steps: carrying out state prediction based on the output of an inertial navigation system; a deviation function is established through sliding window fitting, and effectiveness evaluation and preventive correction are carried out on differential satellite navigation system signals; dynamically adjusting a measurement noise matrix according to the positioning mode and performing residual error verification; carrying out measurement updating by utilizing the deviation passing the verification to obtain an estimated value containing the error of the inertial device so as to carry out closed-loop feedback correction on navigation parameters; and when the satellite signal fails, compensating the inertial navigation system by using the device error parameter in the estimated value and realizing pure inertial recursion. According to the method, the data quality can be improved from the source, the self-adaptive robustness of the system in a complex environment is enhanced, inertial navigation error divergence is continuously inhibited, and the navigation endurance precision under the extreme condition of satellite signal failure is guaranteed.

The invention discloses a method for constructing a regional polynomial ionosphere oblique delay model, which belongs to the field of ionosphere delay error correction of a global satellite navigation system, and comprises the following steps of: calculating a signal puncture point coordinate through a reference station latitude and longitude coordinate, and calculating a signal puncture point coordinate by taking the signal puncture point coordinate, observation time and a satellite elevation angle as joint independent variables; sTEC constructs a polynomial function model for dependent variables; the spatial-temporal dynamic characteristics and the geometric characteristics of the sight line of the satellite are synchronously incorporated into modeling, and the spatial-temporal change rule of the ionosphere region is accurately captured; by utilizing polynomial analysis characteristics, model parameters can be quickly output, a user can directly calculate the required STEC only by inputting own coordinates, time, a satellite elevation angle and a satellite azimuth angle, the process is remarkably simplified, and the real-time performance is improved. According to the invention, the defects of precision and efficiency in a complex regional scene in the prior art are overcome, and a more reliable ionosphere error correction scheme is provided for regional GNSS high-precision positioning.

The invention relates to a small paddy field intelligent weeding machine and a weeding method thereof. The small paddy field intelligent weeding machine comprises a satellite navigation system, a master control box, a three-wheel type chassis, a rice row guide device, a rice seedling robustness evaluation device, a weeding and detection integrated plant protection device and a pressing and swinging device. The satellite navigation system and the main control box are mounted above the three-wheel type chassis, and the rice row guide device for detecting the transverse position of rice seedlings, the rice seedling robustness evaluation device, the removal and detection integrated plant protection device and the pressing and swinging device are sequentially mounted below the three-wheel type chassis from front to back; the removing and detecting integrated plant protection device inclines from the front upper part to the rear lower part, and the pressing and swinging device presses the inclined part above the inclined part or further presses the inclined part downwards, so that the removing and detecting integrated plant protection device enters a seedling protection mode or a weeding mode; the three-wheel type chassis adopts a front wheel driving mode to realize steering or straight movement through differential control of a pair of driving wheels. According to the invention, high-quality mechanical weed control in the rice field is realized, and the seedling damage rate is reduced.

The invention provides a positioning time service base station, a positioning time service method, a storage medium and a program product, relates to the field of communication, and can solve the problems that an existing positioning time service scheme is high in construction, operation and maintenance cost and has a service blind area. The base station comprises a GNSS receiver chip, a crystal oscillator, a data acquisition and processing unit and a radio frequency unit, the GNSS receiver chip is used for receiving more than two frequency point signals at the same time; wherein the frequency point signal comes from a satellite navigation system; the crystal oscillator is used for providing time reference; the data acquisition and processing unit is used for receiving observation data of the satellite navigation system; performing differential calculation at least based on the observation data to obtain differential correction data; wherein the differential correction data is used for the terminal equipment to carry out positioning correction or time service correction; a radio frequency unit; and the radio frequency unit is used for sending the differential correction data to terminal equipment located in a service area of the positioning time service base station.

The invention relates to the technical field of meteorological prediction, and provides a Beidou rainfall prediction method based on a deep learning large model and a related device, and the method comprises the steps: obtaining the time-space reference data of a target region through a Beidou satellite navigation system, including the high-precision positioning data of a Beidou ground-based augmentation station and the meteorological element inversion data of a Beidou remote sensing load; collecting real-time rainfall observation data of a ground rainfall monitoring terminal, a meteorological radar and satellite remote sensing; performing space-time alignment processing on the space-time reference data and the real-time rainfall observation data, and constructing a standardized data set; and constructing a deep learning large model, training the deep learning large model by using a space-time sequence prediction task, and inputting the standardized data set to the trained deep learning large model to output a multi-scale rainfall prediction result of the target area in a future preset duration.

The invention relates to the field of global satellite navigation system ionosphere research, in particular to an ionosphere flicker prediction method based on a BOPSO-LSTM model and residual compensation, and the method comprises the steps: obtaining related ionosphere background environment parameters, and carrying out the preprocessing of the parameters into original data set feature values; taking an ionized layer amplitude flicker index S4 sequence as an original data set label, and uniformly sampling an S4 value and all input parameters at intervals to eliminate multi-source data time dislocation; dividing the original data set into a training set and a test set, and smoothing the S4 of the training set to suppress random high-frequency noise so as to obtain a new training set; then LSTM model parameters are optimized by using a Bayesian particle swarm optimization algorithm, and a BOPSO-LSTM ionized layer scintillation prediction model is constructed; and finally, for the possible problem of predicting medium-intensity flicker into weak flicker in the model, proposing to use a random forest model to predict an S4 residual error and cascade a BOPSO-LSTM model, and performing residual error compensation on a prediction result so as to reduce the deviation of a flicker prediction result and improve the flicker prediction precision.

The invention provides a GNSS-IR (Global Navigation Satellite System-Infrared)-based water level monitoring system and method, and the system comprises a choking coil antenna which is used for receiving a direct signal of a Beidou satellite navigation system and an interference signal formed by a reflected signal of a water surface; the power supply module is used for supplying power to the choking coil antenna based on the solar cell panel or the power supply storage battery; the data transmission module is used for transmitting the interference signal to the water level monitoring module; and the water level monitoring module is used for analyzing the waveform, the polarization characteristic, the amplitude, the phase and the frequency of the interference signal and calculating the water level height through a GNSS-IR (Global Navigation Satellite System-Infrared Spectroscopy) technology. Through the scheme, the equipment deployment process can be simplified, the monitoring cost can be reduced, and the method can adapt to monitoring in various environments.

The invention relates to a fusion method of satellite navigation system double-antenna attitude information and an inertial navigation system, a program, equipment and a storage medium, and belongs to the technical field of inertial base integrated navigation systems. In order to solve the problems that the attitude precision is indirectly improved by mainly depending on speed and position information and dual-antenna attitude information is not fully utilized in the conventional inertial navigation integrated method, attitude measurement of an inertial navigation system is constructed by directly utilizing elevation angle and azimuth angle information output by a dual-antenna satellite navigation system; and direct fusion of attitude information is realized in combination with a Kalman filter. The method comprises the steps of filter initialization, inertial navigation solution, state transition matrix calculation, measurement vector construction, observation matrix calculation, filter time and measurement updating, state correction and the like. The attitude estimation precision of the inertial navigation system is obviously improved, the course angle precision is obviously improved, the pitch and roll angle precision is improved, and the method is simple, efficient and suitable for the navigation fields of unmanned aerial vehicles, automatic driving and the like.

This invention discloses a method and apparatus for accurate bridge damage identification and location based on multi-source data fusion. The method includes: performing spatiotemporal registration and data fusion on the time-series data of the bridge's global planar deformation obtained by ground-based synthetic aperture radar and the time-series data of the bridge's point-like three-dimensional deformation obtained by the BeiDou satellite navigation system to obtain a fused deformation field of the entire bridge area; calculating multiple damage characteristic indicators reflecting different deformation physical mechanisms of the bridge based on the fused deformation field, and determining the corresponding preliminary damage level based on the damage judgment threshold of each damage characteristic indicator; using the preliminary damage levels of each damage characteristic indicator as independent evidence sources, performing evidence fusion to resolve indicator conflicts, and determining the bridge damage location and damage level based on the fusion result. This method can effectively improve the accuracy and reliability of bridge damage identification and location, providing a scientific basis for bridge operation and maintenance decisions.

The application provides a variable fertilization control system and method, the fertilization control system takes a precision fertilization combined land preparation machine as a carrier, uses a Beidou satellite navigation system to obtain an advancing speed and uses a depth sensor to obtain a position height of the precision fertilization combined land preparation machine, a fertilization controller takes an STM32 single-chip microcomputer as a control core, controls a fertilizer discharging motor to be at a corresponding rotating speed, and realizes variable fertilization operation. Before operation, navigation debugging and input of project parameter of a variable fertilization control program in a vehicle-mounted display terminal are completed; during operation, when a field U-turn is encountered, a position height of the precision fertilization combined land preparation machine is changed after a tractor lifting and suspension, and then on-off of the fertilizer discharging motor can be controlled, fertilizer waste is reduced, and manual participation is reduced. The variable fertilization system has high practical value, is simple to operate, solves problems of low field fertilization work efficiency, difficult fertilization control and the like, and achieves the purposes of reducing investment, improving efficiency and increasing crop yield.

The invention provides a satellite communication antenna device and a vehicle-mounted satellite navigation system.The satellite communication antenna device comprises a shell and a communication antenna assembly, the communication antenna assembly comprises a board end connector, an antenna circuit board and a welding layer, the board end connector is provided with a signal transmission line, and the signal transmission line is used for being electrically connected with the grounding end of the antenna circuit board; the board end connector is connected to the antenna circuit board, at least one surface of the antenna circuit board is provided with a copper exposing area, a welding gap exists between the end surface of the board end connector and at least part of the copper exposing area, the welding layer is arranged in the copper exposing area, and the welding layer blocks the welding gap. After the antenna circuit board and the board end connector are assembled, tin soldering is carried out at the connection position between the antenna circuit board and the board end connector, so that signals leaked by the signal transmission line are effectively isolated by the tin soldering, self-excitation caused by GNSS antenna receiving due to signal leakage is avoided, the problem of impedance mismatch is effectively solved, and the antenna quality is improved. Therefore, vehicle positioning precision and navigation system stability are ensured.

The invention relates to a communication device based on Beidou positioning, which comprises a Beidou positioning module, a wireless communication module and a control module, and can acquire position information in real time and perform data transmission through cooperative work of the modules. The Beidou positioning module is responsible for receiving and processing positioning data of a Beidou satellite, and the positioning precision is improved through a differential positioning technology; the wireless communication module adopts an advanced communication protocol and technology to realize rapid transmission and encryption protection of data; the control module serves as a core and is responsible for coordination and management of overall functions, and intelligent decision making and adjustment are conducted according to real-time data and user requirements; the device has the advantages of being simple in structure, convenient to operate, high in positioning precision, stable and reliable in communication and the like; by integrating a Beidou satellite navigation system and a wireless communication technology, high-precision positioning and stable and reliable communication functions are realized.