42results about How to "Meet the needs of high-precision positioning" patented technology

The invention discloses a GPS (global positioning system) dual-frequency non-difference cycle slip detecting and restoring method and device. The method includes: reading a GPS observing value, and generating first detection quantity and second detection quantity according to the GPS observing value; utilizing a self-adaptive sliding window model to smooth the first detection quantity, adjusting the first detection quantity after being smoothed according to a first cycle slip judgment threshold value for cycle slip detection to acquire a first detection result; utilizing a epoch difference-solving method for difference solving of the second detection quantity to generate third detection quantity, and performing cycle slip detection on the third detection quantity to acquire a second detection result; analyzing the first detection result and the second detection result, and calculating the first detection quantity and the second detection quantity at a cycle slip epoch to acquire a first cycle slip value and a second cycle slip value; restoring the GPS observing value according to the cycle slip values. By the GPS dual-frequency non-difference cycle slip detecting and restoring method and device, cycle slip detection success rate and cycle slip restoring accuracy can be improved, so that needs on high-accuracy positioning of GPS navigation can be met, and small cycle slip, big cycle slip, special cycle slip and continuous cycle slip can be detected and restored.

The invention provides a pseudo-range differential positioning method of a long base line. A plurality of satellites, a user terminal and a base station form a satellite navigation pseudo-range differential model. A pseudo-range single-different equation relative to one same satellite is constructed by using pseudo-range observation equations of the base station, the user terminal, and the satellites; with pseudo-range single-different equations of different satellites, a non-linear pseudo-range dual-difference equation group containing multiple satellites is constructed; and then a position of the user terminal is obtained by using the Newton's method and the method of least squares. According to the positioning method, errors of the pseudo-range differential positioning model under base lines with different lengths can be eliminated and thus the increase with increasing of the length of the base line is prevented, so that a small error range can be kept and thus a high-precision positioning requirement can be completely met.

The invention discloses a radio navigation and location system with the spread spectrum of medium short wave, which relates to the radio field and solves the disadvantages of poor anti-interference ability, weak confidentiality and low measurement precision in existing radio navigation systems. The invention comprises the following steps: a decoded information data is sent to a modulating device by an information encoder of a transmission base station; the analog signal which is acquired from the modulation runs through a filter and a power amplifier for forming the radio waves which radiate outwards continuously; a navigation receiver receives the amplified signal of N radio waves, wherein, N is larger than or equal to 4; the amplified signal is converted into an intermediate frequency signal through the frequency conversion implemented by a radio frequency processing module and transmitted into a capturing and tracking device; an observed quantity extracting module and an information demodulator are respectively used for extracting and examining the information data in the capturing and tracking device, and the information data is then transmitted into a position computation module for implementing position computation. The invention can effectively suppress interference, has higher reliability and high location precision as the related capturing and the carrier tracking are adopted, satisfies the high-precision location requirements in a region, and enlarges navigation and location range.

The present invention provides a method for receiver navigation and location. The method comprises the steps of: receiving basic broadcast telegraph text and correction parameters of a plurality of satellites, and establishing one pseudo-range observation equation and one phase observation equation corresponding to each satellite; constructing an observation quantity 1 according to the pseudo-range observation equations after correction and the phase observation equations after correction; constructing an observation quantity 2 according to the pseudo-range observation equations after correction and the phase observation equations after correction; performing combined solution of the obtained observation quantity 1 and the observation quantity 2 of the satellites to obtain an operation result of user location, wherein the correction parameters are selected from the following combinations: partition comprehensive correction*4; and at least one combination of the partition comprehensivecorrection*4 and track correction*4, clock difference correction*2 and ionized layer correction*3.

The invention provides a vehicle positioning parameter estimation method based on DOA/TOA joint estimation in a multipath environment. Positioning parameters are extracted via the communication between a vehicle and roadside facilities, the wireless communication between a target vehicle and an RSU follows the IEEE802.11p protocol, and an orthogonal frequency division multiplexing signal is transmitted in a wireless channel thereof; the joint parameter estimation of DOA and TOA is achieved via the analysis of the multipath channel frequency response of the signal, and the channel noise interference is reduced by using the unscented Kalman filtering to improve the overall performance of the method; and the high-speed moving vehicle and a roadside unit RSU establish communication using the OFDM signal and use the total least squares algorithm TLS-ESPRIT based on the rotation invariant technique to calculate the vehicle positioning parameters, and the position information of the target vehicle can be obtained based on the estimated DOA and TOA.

The invention relates to the field of logistics and discloses a jacking type locating device and a material transferring system. The jacking type locating device comprises a material transferring tray and a locating assembly. The material transferring tray is used for holding materials. The locating assembly comprises a locating support and a jacking mechanism installed on the locating support. The material transferring tray can be placed on the locating support. The jacking mechanism is provided with a locating pin. The material transferring tray is provided with a guide bush matched with the locating pin. The locating pin is matched with the guide bush. According to the jacking type locating device and the material transferring system, rising and falling movements are conducted through the jacking mechanism, the locating pin is matched with the guide bush, the position of the material transferring tray is adjusted and located, and the requirements of industrial production for high-precision material locating are met.

The embodiment of the invention relates to the technical field of automatic guided vehicle control, and discloses a pose recognition method, electronic equipment and a storage medium. The method comprises the following steps: acquiring point cloud data through a sensing device arranged on the automatic guided vehicle; identifying a target point cloud from the point cloud data; wherein the target point cloud is point cloud data corresponding to two reflective positioning parts pre-deployed at a butt joint position; fitting according to the target point cloud and the preset parameters of the tworeflective positioning parts to obtain the pose of the automatic guided vehicle relative to the butt joint position; wherein the automatic guided vehicle carries out navigation according to the pose.According to the embodiment of the invention, the positioning accuracy and reliability of the automatic guided vehicle and the like can be improved, so that some high-precision positioning requirements can be met.

The invention provides a civil aviation passenger plane high-precision positioning method based on multiple sensors. The civil aviation passenger plane high-precision positioning method comprises thesteps of calculating flight correction GPS height, calculating flight correction radio height, calculating flight correction inertial navigation height and calculating flight optimal height data. Theinvention relates to electronic equipment and a storage medium, which are used for executing the method. Compared with an existing passenger plane high-precision positioning technology, equipment nodes and infrastructures do not need to be additionally configured, universality is high, and high-precision positioning requirements in most flight scenes can be met; compared with traditional airborneGPS positioning, the positioning accuracy is greatly improved, and a firmer guarantee is provided for flight safety of a passenger plane; high-precision positioning can be realized only by acquiring asmall amount of earlier-stage empirical data, so that the method has good practicability and expandability; the high-precision positioning data provided by the invention provides more real flight passenger plane basic position data for academic research in many fields of the civil aviation industry.

The invention belongs to the field of power automation, and discloses a power equipment positioning method and system based on a power network scene, and power equipment, wherein the method comprises the following steps: obtaining a power network scene type of to-be-positioned power equipment; according to the power network scene type, selecting a target fusion positioning method of the to-be-positioned power equipment from a preset first fusion positioning method and a preset second fusion positioning method; and obtaining position information of the to-be-positioned power equipment according to the target fusion positioning method. By adopting a mode of integrating wireless positioning and GPS positioning, the problem of insufficient positioning precision caused by a single positioning mode is avoided, and the positioning precision of the power equipment is effectively improved. Moreover, based on the characteristics of different power network scene types, different fusion positioning methods are selected, the method can be suitable for different power network scenes, and the requirements of different power network scenes for high-precision positioning are fully met.

Embodiments of the present invention provide a positioning method in a mobile network, a base station and a mobile terminal, capable of performing high-precision positioning on the mobile terminal. The positioning method includes: the first base station receives an RTK observation value for an RTK reference source; the first base station determines first correction information according to the RTK observation value, and the first correction information is obtained from a positioning system for the RTK reference source Correction information of positioning information: the first base station sends the first correction information to the first mobile terminal, so that the first mobile terminal determines the position of the first mobile terminal according to the first correction information. The base station includes: a receiving module, configured to receive an RTK observation value for an RTK reference source; a processing module, configured to determine first correction information according to the RTK observation value; a sending module, configured to send the first correction information to the first mobile terminal Correcting information, so that the first mobile terminal determines the location of the first mobile terminal according to the first correcting information.

The invention relates to an integral mounting device for a power transmission system of an electric vehicle. The device solves the technical problems that the space of a transmission module is narrow, motors are mounted on both sides for driving, and two sets of power are used for transmission. The mounting device comprises a left mounting support (1), a connecting panel (3), a left base (4), a lower connecting support (6) and a left controller mounting support (7), wherein both ends of the connecting panel are respectively and fixedly connected with the left mounting support (1) and a right mounting support (2); both ends of the lower connecting support (6) are respectively connected with the left mounting support (1) and the right mounting support (2); both ends of the left controller mounting support (7) are respectively and fixedly connected with the two connecting supports; the left mounting support (1) is connected with the left base (4); the right mounting support (2) is connected with a right base (5); the mounting supports and the bases are in ladder-shaped slot combination in the horizontal direction, and the mounting supports and the bases are in curved surface combination in the vertical direction; the left base (4) and the right base (5) are respectively and fixedly connected with a vehicle body of a tracked vehicle.

The invention relates to a laser microstructure machining machine tool repeated positioning control method. The method comprises a step of acquiring configuration information of a machine tool workbench, wherein the configuration information comprises a movement track, a speed and an acceleration of the machine tool workbench, a step of establishing a mathematical model of a machine tool transmission link and calculating ideal values of the rotating speed and the acceleration of each servo motor in combination with the configuration information, a step of reading actual values of the rotatingspeed and the acceleration of each servo motor, comparing the actual values with ideal values to obtain setting parameters of speed and acceleration composite feedforward compensation, and obtaining afeedforward compensation variable, a step of acquiring a feedback control variable, and a step of compositing the feedforward compensation variable and the feedback control variable to form a controlvariable, wherein the machine tool workbench is used for clamping a to-be-machined workpiece, and the machine tool workbench can be driven by a servo motor set to horizontally move along an X axis and a Y axis relative to the machine tool and rotate around a theta axis. According to the invention, the repeated positioning precision of a laser microstructure processing machine tool can be greatlyimproved.

The invention relates to a coordinate joint surveying and mapping calibration method based on a total station and RTK. The method comprises the steps: S1, arranging an augmented reality identifier on an indoor wall surface or a column; s2, measuring absolute coordinates of the three known points by adopting RTK measurement; s3, erecting the total station and the two prisms at the three known points respectively; s4, erecting a third prism at an indoor unknown point; s5, obtaining the absolute coordinates of the unknown point through the total station in combination with RTK; s6, marking the absolute coordinate of the augmented reality identifier according to the absolute coordinate of the unknown point and the vector relationship between the unknown point and the augmented reality identifier; s7, converting the absolute coordinates, generating indoor relative coordinates, and storing the indoor relative coordinates in a coordinate dictionary; and S8, transforming unknown points, repeating the steps S4-S6, forming an indoor two-dimensional code relative coordinate set, and identifying the indoor two-dimensional code to realize indoor high-precision positioning. Compared with the prior art, the method has the advantages of solving the problem of indoor high-precision positioning in automatic driving, and being low in cost, stable, reliable and the like.