68 results about "Gps receiver" patented technology

An agricultural steering and navigation system comprising a tactile steering system comprising at least one crop sensor configured to command steering of an agricultural vehicle based upon the location of stalks, a GPS guidance system comprising at least one GPS receiver configured to command steering of the agricultural vehicle along guidance paths, and a processor configured for selectively using either the tactile steering system and the GPS guidance system based on one or more triggers.

The invention relates to the technical field of gas leakage monitoring and tracing, and particularly discloses a gas leakage monitoring and tracing method and system based on multi-source data fusion. The method comprises the following steps: acquiring multi-source data through a sensor group on a mobile platform, wherein the sensor group at least comprises a Fourier infrared spectrometer, a visible light camera, an inertial measurement unit and a GPS receiver; based on an image sequence acquired by a visible light camera, constructing an ORB-SLAM3 algorithm by utilizing visual synchronous localization and a map which are subjected to static semantic constraint optimization, and estimating the pose of the mobile platform in real time; fusing the pose of the mobile platform, the data of the inertial measurement unit and the data of the GPS receiver with a pre-constructed three-dimensional building panorama, and calculating the real-time geographic coordinates of the observation target; and based on the data of the Fourier infrared spectrometer and the real-time geographic coordinates of the observation target, determining a gas leakage position and generating traceability information.

Power can be preserved in a tracking device equipped with a GPS receiver and a transceiver by evaluating the proximity of the tracking device to a mobile device and enabling the GPS receiver and transceiver only in the event that the tracking device is out of the range of the mobile device. Once enabled, the location of the tracking device can be determined based on location information received from the GPS receiver. The determined location can be provided to a tracking system associated with the tracking device. The tracking system can then inform an owner of the tracking device of the determined location. Once the tracking device has been found, the GPS receiver and the transceiver can be disabled to save additional power.

A rotary wing drone communicates its altitude (determined by an onboard GPS receiver) and an air pressure (from multiple onboard barometers) to a ground station which has a known height above sea leve

Techniques for direction finding and geolocation of a GPS spoofer. A methodology implementing the techniques according to an embodiment includes steering a beam in a direction selected from a search constellation and measuring a first signal power received through the steered beam. The method also includes steering a null in the selected direction and measuring a second signal power received through the steered null. The method further includes calculating a difference between the first signal power and the second signal power and estimating an angle of arrival (AOA) of the GPS spoofer signal as the selected direction if the calculated difference exceeds a threshold power value. In some such examples, the method includes accumulating signals having four similar estimated AOAs, associated with unique pseudo-random noise codes, and employing a GPS receiver to calculate a candidate position of a source of the GPS spoofer signals based on the accumulated signals.

Systems and methods are provided for visualizing predicted paths of aircraft during taxiing that promote awareness of the pilot regarding potential collisions along the predicted paths. The systems include a database and a controller in operable communication with a GPS receiver, a steering system, the database, and a display device. The controller is configured to receive GPS coordinates from the GPS receiver, a front wheel steering angle from the steering system, aircraft and aerodrome data from the database, determine a predicted path of the aircraft in real-time while the aircraft is taxiing at the airport based on the GPS coordinates, the front wheel steering angle, and state parameters indicated by the aircraft data, and generate a visual representation of the predicted path on the display device, wherein the visual representation includes boundaries defined by tips of wings of the aircraft along the predicted path.

This utility model relates to the field of positioning and navigation mounting components, and more particularly to a mounting device for robot positioning and navigation, comprising a frame assembly mounted on the bottom of a GPS receiver. The frame assembly includes a fixed plate, and a buffer is provided at the bottom of the fixed plate. The buffer includes a buckle plate connected and fixed to the horizontal end of the fixed plate, and a damping spring assembly is provided at the bottom of the buckle plate. The bottom end of the damping spring assembly is connected and fixed to a support plate. This utility model achieves this by having the top of the buckle plate connect to the horizontal end of the fixed plate, and the damping spring assembly is placed between the fixed plate and the support plate. The spring end of the damping spring assembly absorbs impact energy, and the damper end dissipates this energy. Under their combined action, the vibration and impact on the system are effectively controlled. Through the coordinated work of the spring end of the damping spring assembly and the damper, the system can quickly recover to a stable state after being impacted, reducing unnecessary resonance and vibration.

A system and method transforms conventional waveform measurements from legacy power quality meters into synchro-waveforms. The system and method does not require legacy power quality meters to be equipped with GPS receivers or other time-synchronization hardware. Data-driven methods operate in two steps: first, they perform optimization-based event signature alignment, and then they use the results to estimate a synchronization operator between any two legacy meters.

A pet dropping retrieval and disposal device has a mobile unit and a base unit for automatic collection and disposal of pet droppings. The mobile unit navigates a yard area using a dual track drive system and a GPS receiver to locate droppings via a machine vision system camera and a methane sensor. The collected droppings are transferred to a temporary hopper via a conveyor belt and analyzed by a health sensor for potential health concerns. The base unit provides recharging via a charging port, facilitates disposal into a holding bin, and allows user control through a local control panel. The device communicates telemetry data via a telemetry RF signal to a wireless device for remote monitoring.

Information about specific objects can be efficiently collected from various locations. [Solution] The information provision system 1 comprises an in-vehicle terminal device A mounted on a mobile vehicle M and an intermediate server X. The in-vehicle terminal device A comprises a determination means for determining whether an object (e.g., a utility pole with a nest) is included in an image captured by an imaging unit 22, a text data transmission means for transmitting information related to the object (such as the name of the object and its position in the captured image) as text data to the intermediate server X if it is determined that an object is included, a GPS receiver 23 for acquiring the location information of the in-vehicle terminal device A, and a location information transmission means for transmitting the location information to the intermediate server X. The intermediate server X can transmit the text data and location information received from the in-vehicle terminal device A to the GIS server Y.

The invention belongs to the technical field of coast engineering measurement, and particularly relates to an automatic measuring vehicle for measuring an artificial shoreline. The measuring vehicle comprises a vehicle body, a high-precision GPS receiver, a laser sensor, a controller and a safety protection system. The controller controls the vehicle body to automatically run along the shoreline through a closed-loop algorithm, synchronously collects position and distance data, and solves the coordinates of the shoreline; meanwhile, multiple levels of safety protection mechanisms, such as an early warning air bag, graded deceleration and an emergency separation structure, are integrated, the system adapts to a complex levee top environment, efficient, automatic and high-precision shoreline surveying and mapping operation can be achieved under the conditions of a no-fly zone and the like, and the measurement safety and the data reliability are remarkably improved.

The utility model provides a portable underground pipeline detection device, which relates to the field of underground pipeline detection devices and comprises a detection unit, a displacement assembly is arranged at the bottom of the detection unit, and a pushing assembly is arranged on one side of the displacement assembly. The detector is matched with the GPS receiver to obtain and sense the position information of the underground pipeline in real time so as to position the underground pipeline, in addition, the pushing assembly can push the detection unit and the displacement assembly, when the four moving wheels roll on the ground, the detection unit can be driven to move, and the underground pipeline can be positioned conveniently. When the device meets an uneven road surface, the elastic force of the springs can promote the frame rods and the moving wheels to move, it is ensured that the moving wheels make contact with the ground all the time, four-point supporting is achieved, and in the displacement process, if jolting occurs, the moving wheels can be driven to move. The synergistic effect of the damper, the spring and the rubber plate can effectively counteract bumping vibration force during movement, so that the stability of the detection unit after displacement or positioning is ensured.

The utility model relates to a pile foundation casing measuring and positioning device which comprises a fixed cross and a plurality of telescopic frames, the fixed cross comprises two sections of connecting rods which are perpendicularly connected in a crossed mode, and a GPS receiver is installed at the intersection point of the two sections of connecting rods; each telescopic frame is inserted into one end of the corresponding connecting rod, and the connecting rods and the telescopic frames inserted into the connecting rods are provided with scales with the same direction and interval. The telescopic frames are connected to the four ends of the fixed cross in an inserted mode, so that the pile foundation casing measuring and positioning device can be placed on the pile foundation casing and adapt to pile foundations of different sizes, storage and carrying are convenient, the GPS receiver is installed on the fixed cross, the actual deviation of the pile foundation casing is recorded through the GPS receiver, the connecting rods and the scales of the telescopic frames, and the measuring and positioning accuracy of the pile foundation casing is improved. According to the technical scheme, an operator is prevented from measuring on the auxiliary wood board, and the technical problems that in the related technology, due to the fact that the inner diameter of the pile foundation casing is long, the erected auxiliary wood board is not provided with a protective fence, meanwhile, the field environment is complex, and danger is likely to happen when the measurer works on the auxiliary wood board in a lofting mode are solved.

A smart nose box is provided that includes both a housing portion and a lid portion. The housing portion includes monitoring circuits for monitoring the health of lamps in a towable asset. The lid portion includes a battery, a GPS receiver, and a telematics transceiver.

This invention provides a vehicle position estimation method that can improve the accuracy of vehicle position estimation while suppressing an increase in processing load. [Solution] First, the driving environment around the vehicle is determined (S107). The vehicle is equipped with multiple types of sensors (e.g., GPS receiver, LiDAR, camera, radar). Next, a table of information showing the correspondence between the driving environment and the sensors used to estimate the vehicle's position is referenced, and the sensors associated with the determined driving environment are identified (S111). Subsequently, the vehicle's position is estimated based on the detection results of the identified sensors (S112).

Collision avoidance control system (100) comprising: a GPS receiver (110) configured to receive position information of a vehicle (A, 210); a navigation system (120) in which map information is stored; a control unit (140) configured to receive the position information of the vehicle (A, 210) from the GPS receiver (110) and the map information from the navigation system (120); and a sensor unit (130) configured to detect at least one target vehicle (B, 220, 222) that is near a roundabout (230), and to obtain driving information about the target vehicle (B, 220, 222), including a distance to the target vehicle (B, 220, 222), a position of the target vehicle (B, 220, 222) and / or a speed of the target vehicle (B, 220, 222), and a forward vision image information of the vehicle (A, 210), wherein the control unit (140) is configured toto calculate an estimated collision point (260) based on the map information, the position information of the vehicle (A, 210) and the driving information about the target vehicle (B, 220, 222), to determine a collision risk based on an absolute value of a difference between a first arrival time (TA) of the vehicle (A, 210) at the calculated estimated collision point (260) and a second arrival time (TB) of the target vehicle (B, 220, 222) at the calculated estimated collision point (260) and to adjust a speed of the vehicle (A, 210) in response to the determined collision risk, wherein the control unit (140) is configured to: derive a plurality of characteristic points with reference to corresponding corners (1, 2, 3, 4) of the target vehicle (B, 220, 222) from the image information obtained by means of the sensor unit (130). extract; extract at least one interpolation point (5, 6) by linear interpolation with reference to the corners,to calculate the points arranged in the steering direction of the target vehicle (B, 220, 222) when the total length of the target vehicle (B, 220, 222) is greater than a predetermined length; and to calculate a plurality of second arrival times (TB_1, TB_2, TB_3, TB_4, TB_5, TB_6) that require the extracted plurality of characteristic points and the calculated minimum interpolation point (5, 6) to reach the estimated collision point (260).

This invention relates to the field of vehicle positioning and navigation technology, and provides a fusion positioning method that takes into account vehicle dynamics and nonholonomic constraints. The method includes the following steps: reading information provided by a GPS receiver, IMU sensor, vehicle CAN bus, etc.; establishing a coordinate system based on the read information; calculating position, velocity, and attitude information using an INS kinematic model based on information provided by the IMU sensor and GPS receiver (or UWB); establishing state equations and observation equations, estimating navigation error values ​​and IMU sensor bias values ​​using an error state Kalman filter, and using the results to correct the INS kinematic model; establishing a trajectory estimation model based on vehicle dynamics, establishing state equations and observation equations, and estimating position and heading angle information using an extended Kalman filter. This method can improve the accuracy of navigation and positioning when GNSS signals are interfered with or interrupted, effectively improving positioning accuracy and extending positioning time.

This system provides a patrol support system that can reduce unnecessary power consumption without compromising the accuracy of license plate reading. [Solution] A patrol support system that assists in patrolling to confirm the presence or absence of people inside vehicles parked in a parking lot, wherein the control unit analyzes the image data input from the imaging unit, reads the information written on the license plate of the vehicle captured in the image data as text data, generates display data to be displayed on the display unit based on the text data, and determines the type of control command data to be output to the light based on the time data input from the timing unit and the signal strength data input from the GPS receiver.

The application relates to a robot-based visual positioning navigation method and device, and relates to the technical field of positioning navigation. When positioning information obtained by a GPS receiver of a robot is in a positioning failure state, multiple candidate key frames are obtained by processing multiple images based on the positioning failure state; the multiple candidate key frames are screened according to the current track curvature of the robot to obtain an initial candidate key frame set; the initial candidate key frame set is screened based on environment scores to obtain a target candidate key frame set; feature points of a target frame image are matched and calculated with feature points of each target candidate key frame to obtain a hypothesis camera pose; all initial matching pairs are projected and tested based on the hypothesis camera pose, and the number of inliers is counted; a pose corresponding to a final candidate key frame with the maximum number of inliers is selected as position information of the robot at the current moment. The technical scheme is implemented to solve the positioning difficulty problem caused by repetitive structures in a tunnel environment.

The utility model belongs to the field of fixing devices, and particularly relates to a multifunctional fixing device of a GPS (Global Positioning System) receiver, which comprises a mounting rack, and a transverse plate is fixedly connected to the middle of the mounting rack; a vertical plate is arranged at the top of the transverse plate; the inner side walls of the vertical plates are rotationally connected with forward and reverse screw rods; clamping plates are symmetrically in threaded connection with the middle parts of the positive and negative screw rods; a groove is formed in the middle of the clamping plate; through the cooperation effect of the positive and negative screw rods and the clamping plates, the pair of clamping plates can be close to each other and extrude and clamp the receiver by rotating the positive and negative screw rods, the fixing work of the receiver of different models is achieved, and meanwhile, the side key of the receiver is located in the cavity when the receiver is clamped by arranging the groove; and mistaken touch on the side key when the receiver is fixed is reduced.

The application relates to the technical field of GPS receivers, and discloses a GPS receiver for mine geological and topographic mapping, which comprises a GPS receiver body and a mounting rod arranged at the bottom of the GPS receiver body, a plurality of mounting grooves in annular array are formed in the outer wall of the mounting rod, a protection assembly is arranged on the inner wall of the mounting groove, and an emergency assembly is arranged at the bottom end of the mounting rod. In the unfolded state of the GPS receiver for mine geological and topographic mapping, the deformation plate and the protection plate form an outer protection structure, the protection plate is located outside the GPS receiver body, and the protection plate is first contacted with obstacles such as ores when colliding, so that the equipment is prevented from being directly damaged; if the equipment falls, the arc-shaped shock-absorbing plate on the side of the protection plate first touches the ground, the elastic metal material can convert kinetic energy into elastic potential energy and internal energy through deformation, the sliding of the sliding plate is further matched to buffer the impact force, the damage of the body caused by knocking is greatly reduced, and the use safety of the equipment in the complex mine environment is ensured.

This utility model discloses a radiation source generating device for verifying the positioning accuracy of a lightning detection system, within the field of lightning detection technology. The device includes a central control unit connected to an arbitrary waveform generator, a GPS receiver, and a radio frequency processing unit, which is connected to an antenna. This enables high-precision positioning accuracy verification of the lightning detection system with adjustable three-dimensional spatial position. Furthermore, the radiation source transmitting device can simulate lightning radiation sources of corresponding frequency bands according to the requirements of different frequency band lightning detection systems. It can accurately record the precise time and spatial position of the lightning radiation source used for network accuracy verification, significantly improving verification accuracy. The device is flexible and lightweight, and can be equipped with a drone, allowing accuracy verification experiments to be conducted at any location within the detection network without involving actual lightning discharge events, thus providing excellent safety.

Provided is a synchronous pinger type underwater lighthouse system comprising at least three underwater lighthouses installed for use on the seabed at predetermined positions, each underwater lighthouse including a first GPS receiver that surfaces at predetermined intervals, receives a radio wave from a GNSS satellite, and outputs a GPS signal, a first synchronization signal generating unit that includes a first high-precision oscillator and generates a first synchronization signal having a predetermined period with a phase synchronized to the received GPS signal, and a transmitting unit that transmits a transmission signal having a predetermined period and comprising a PN sequence code into the water as an ultrasonic wave, in synchronization with the first synchronization signal generated by the first synchronization signal generating unit, wherein: an underwater robot having a receiving unit that receives the transmission signal from the underwater lighthouse includes a second GPS receiver that surfaces at predetermined intervals, receives a radio wave from a GNSS satellite, and outputs a GPS signal, a second synchronization signal generating unit that includes a second high-precision oscillator and generates a second synchronization signal having the same period as the first synchronization signal with a phase synchronized to the received GPS signal, and a correlator for identifying the transmission signal transmitted from the underwater lighthouse; and the underwater robot receives the transmission signal from the underwater lighthouse, obtains an arrival time from the second synchronization signal generated by the second synchronization signal generating unit and the reception time of the transmission signal, obtains the distance to the identified underwater lighthouse from the arrival time and the underwater speed of sound, and performs position measurement on the basis of the distance.

The utility model relates to the technical field of positioning and navigation infrastructures, and discloses a GPS receiver supporting device which comprises a vertical rod, the outer wall of the vertical rod is connected with a protective shell through an adjusting part, a placing frame is fixedly installed in the protective shell, a GPS receiver is clamped into the placing frame, a through groove is formed in the front face of the protective shell, and the GPS receiver is clamped into the through groove. A detachable plate is clamped in the through groove, the detachable plate is detachably connected with the placing frame through a buckle component, a notch is formed in the outer wall of the placing frame, the protective shell is arranged to protect the GPS receiver, the GPS receiver is clamped and fixed through the placing frame, and the through groove is arranged to enable the GPS receiver to be placed in or taken out. The detachable plate is arranged to seal the through groove, the tripod is arranged to support the vertical rod, the height of the protective shell is adjusted up and down through the adjusting component according to use requirements, then the height of the GPS receiver is adjusted, and the detachable plate and the vertical rod are connected together through the buckle component.

A system configured to modify limits of at least one of vehicle ride height adjustability and wheel pivot distance based on wheel diameter. The system includes: a wheel speed sensor; a GPS receiver; an adjustable ride height system configured to raise and lower a body of a vehicle; a steering system configured to pivot wheels of the vehicle; and a control module. The control module is configured to: determine a wheel speed of a wheel based on an input from the wheel speed sensor; determine a vehicle speed based on GPS signals; compare the wheel speed and the vehicle speed, and identify a discrepancy therebetween; determine a wheel diameter based on the discrepancy; and modify at least one of a ride height adjustability limit of the adjustable ride height system and a wheel pivot distance limit of a steering system based on the wheel diameter determined.

Techniques are provided for improved precision timekeeping for a global positioning system (GPS) receiver. A methodology implementing the techniques according to an embodiment includes generating a system clock signal at a reference frequency, the system clock signal having a first frequency stability. The method also includes generating an auxiliary clock signal at an auxiliary clock frequency, the auxiliary clock signal having a second frequency stability that is greater than the first frequency stability, wherein the auxiliary clock frequency differs from the reference frequency by a frequency offset. The method further includes calculating corrections to the auxiliary clock signal based on a measure of error in the frequency offset and on an estimate of error in the auxiliary clock frequency. The method further includes using the calculated corrections to generate a timing signal, during absence of received GPS satellite signals (e.g., during times when less than four satellite signals are received).

The present disclosure relates to systems and methods configured to limit suspension stroke and wheel pivot based on a detected wheel diameter. A system is configured to modify a limit value of at least one of a vehicle terrain clearance adjustability and a wheel pivot distance based on a wheel diameter. The system comprises a wheel speed sensor; a GPS receiver; an adjustable terrain clearance system configured to raise and lower a body of the vehicle; a steering system configured to pivot wheels of the vehicle; and a control module. The control module is configured to: determine a wheel speed of the wheel based on an input from the wheel speed sensor; determining a vehicle speed based on the GPS signal; comparing the wheel speed and the vehicle speed and identifying a difference therebetween; determining a wheel diameter based on the difference; and modifying at least one of a terrain clearance adjustability limit of the adjustable terrain clearance system and a wheel pivot distance limit of the steering system based on the determined wheel diameter.

The utility model provides a kind of RTK positioning base station, it is related to positioning base station technical field, including waterproof distribution box, full-frequency survey antenna, 4G antenna, water immersion sensor, waterproof distribution box, GPS receiver / transmitter, leakage protector, 12V DC power supply, 4G DTU module, self-drying module, humidity sensor, lead-acid battery and dual power supply change-over switch.Full-frequency survey antenna receives multi-frequency signal, 12V DC power supply powers 4G DTU module, leakage protector is used to cut off power supply, GPS receiver / transmitter receives satellite data, 4G DTU module carries out protocol conversion to data, water immersion sensor collects water immersion data and alarm according to regulation, self-drying module absorbs water vapor in box, humidity sensor measures humidity, lead-acid battery is used to provide backup power supply, dual power supply change-over switch is used to realize the power supply switching between two power supplies.The application has the beneficial effects that: it has good portability, can reduce base station erection difficulty and cost, improve waterproof performance.

A method and system include, among other components, a GPS receiver and one or more Universal Serial Bus (USB) ports. The GPS receiver may be implemented as a discrete device and may be located in close proximity, e.g., anywhere from 5 to 30 mm, to one or more of the USB ports. Performance data may indicate GPS performance or functionality is influenced by one more USB parameters including, USB version information, e.g., USB 2.0, USB 3.0, etc. and port proximity information indicating distance between the systems USB port and the GPS receiver or a component thereof, e.g., a GPS antenna. The system may include a circuit, module, or other component to detect GPS activity and transmit a GPS-activity signal to trigger a USB configuration that prevents USB 3.0 operation. The detection circuit may employ, e.g., an existing GPS device pin or a custom circuit configured to detect GPS power consumption.

The invention provides a high-precision clock synchronization method, and relates to the technical field of clock synchronization, and the method comprises the steps: S1, collecting the historical data of a constant-temperature crystal oscillator; s2, using the constant temperature crystal oscillator data to train a BP neural network to obtain a BP neural network frequency prediction model; s3, the BDS receiver and the GPS receiver are used for receiving the corresponding satellite clock information and resolving the satellite clock information, timestamps of the BDS and the GPS are obtained, and a source clock is determined; s4, determining standard time; s5, when communication interruption occurs in the BDS and the GPS and the constant-temperature crystal oscillator enters a punctuality state, performing frequency adjustment according to the obtained prediction frequency, then converting the virtual prediction timestamp into prediction time, and taking the prediction time as standard time; s6, sending the standard time information to the base station in a message form; and S7, the base station sends the standard clock information to a local device, and the local device performs clock correction synchronization according to the standard time. The method has the beneficial effects that the stability can be improved while the synchronization accuracy is improved.