13 results about "Navigation system" patented technology

The invention discloses a picture navigation method and corresponding picture navigation equipment and picture navigation system. The picture navigation method comprises the following steps of: acquiring pictures with position information; selecting one picture, and using the corresponding position information of the picture as a navigation destination; determining starting position information; and determining a navigation route according to the corresponding position information of the picture and the starting position information. The picture navigation method disclosed by the invention has the advantages that the position information of a picture shooting site can be automatically obtained after acquiring the picture with the position information and selecting one picture, then the navigation route between the picture shooting site and the starting position is obtained by utilizing the corresponding position information, so that convenient and fast effects are achieved, and the entertainment is strong.

The invention provides a vehicle-mounted navigation system. The vehicle-mounted navigation system comprises a vehicle-mounted GPS (Global Positioning System) antenna, a camera, an AR (Augmented Reality) head-up display and a vehicle-mounted navigation host, wherein the vehicle-mounted GPS antenna is used for locating and obtaining a world coordinate system; the camera is used for carrying out real-time image collection on a road condition ahead; the vehicle-mounted navigation host comprises a coordinate system conversion unit which is used for carrying out image recognition and analysis on a road condition image collected by the camera and converting the world coordinate system to a camera image coordinate system, a model generating unit which is used for generating a 3D (Three-dimension) model of a marching road according to the camera image coordinate system, a virtual navigation information generating unit which is used for generating virtual navigation indicating information according to the 3D model of the marching road and an output unit which is used for outputting the virtual navigation indicating information to the AR head-up display; the AR head-up display is used for projecting the virtual navigation indicating information to a windshield and realizing the effect of overlaying the virtual navigation indicating information to an actual road.

The invention discloses a method for correcting feedback of an inertial navigation system/global position system (INS/GPS) combined navigation system based on lever arm estimation. The method comprises the following steps of: extending a lever arm error to a system error state vector for estimation, judging whether a random error of an inertial device is accurately estimated through comparing whether the difference between a lever arm estimation value and a true value exists in an error threshold range, wherein the error of the inertial device is effectively estimated when the error of the lever arm estimation value is smaller than a set threshold value, measured outputs of a gyroscope and an accelerometer are corrected by utilizing the error of a random constant of the estimated inertial device, and unity feedback correction is performed during combined Kalman filtering, otherwise, feedback correction is not carried out on the error of the inertial device. According to the method, the error of the random constant of the inertial device can be subjected to effective estimation and unity feedback correction, and the precision of the INS/GPS combined navigation system can be effectively improved.

A method and apparatus for managing movement. A navigation system comprises a first inertial measurement unit enabled global positioning system device having a first inertial measurement unit with a first level of accuracy in a first vehicle and is configured to provide first information that identifies a position of the first vehicle relative to a second vehicle. The navigation system further comprises a second inertial measurement unit enabled global positioning system device in the first vehicle having a second inertial measurement unit with a second level of accuracy that is greater than the first level of accuracy and is configured to provide second information that identifies the position of the first vehicle relative to the second vehicle. The navigation system further comprises a controller that is configured to perform an action based on a desired level of accuracy of the first information.

The invention discloses an intelligent underwater combined navigation fault diagnosis method which comprises the following steps: classifying faults of an underwater combined navigation system into a noise burst type system fault, an information burst type system fault and an information gradual change type system fault; judging whether the burst type system fault happens or not by using an improved residual*2 detection method; if the burst type fault happens, isolating a fault subsystem; calculating an average residual value and a residual absolute sum value, and judging whether the system has the noise burst type system fault or the information burst type system fault according to the calculation result, so as to make a preparation for system reconstruction after the fault of the fault subsystem is eliminated; and calculating an average normalization residual value and an adjacent statistic period residual absolute sum value, and judging whether the gradual change type fault happens or not according to the calculation result. By adopting the method, the defect that a fault detection system judges a fault system as a non-fault system by mistake because of the tracking characteristics of a filter is avoided, and meanwhile, various faults in the underwater combined navigation system can be rapidly and accurately judged.

The invention provides a high-temperature miniaturized resonant gyroscope. The gyroscope comprises a harmonic oscillator, a circuit board, piezoelectric elements, a supporting base, a shell and binding posts, wherein the harmonic oscillator is arranged in the shell and connected with the supporting base, and the piezoelectric elements are connected with the binding posts through a metal conductor.Key process points of internal elements of the gyroscope are fixedly connected by adopting a high-temperature material and a high-temperature process, and the gyroscope is a small-size gyroscope capable of working at a high temperature. The invention also provides an inertial navigation system. The system comprises a three-axis gyroscope, a three-axis accelerometer and a shock absorber, wherein the gyroscope is fixedly connected with the shock absorber, and the gyroscope adopts the high-temperature resonant gyroscope. The invention further provides a drilling measurement system and a drillingmeasurement method. The system has the environmental adaptability under high temperature, strong vibration and large impact and has the advantage of small volume of drilling measurement. The method is used in the measurement system, and underground position measurement can be accurately carried out.

The invention discloses a navigation system and a navigation method therefor. The navigation system and the navigation method are used for guiding a mobile object to reach a destination along a plan path. The navigation system is provided with a photographic device for acquiring images in front of a mobile object in navigation, and with a comparison module for comparing the images acquired by the photographic device and data of landmarks through which the mobile object will pass in the plan path. If characteristics are conform, a navigation interface prompts the plan path in the way of inclusion of landmark data-related information and if the characteristics are not conform, the navigation interface prompts the plan path in the way of exclusion of the landmark data-related information. Therefore, the navigation system can realize effective and accurate navigation.

The invention discloses a satellite selection method for a multi-satellite navigation system based on a satellite selection template. The satellite selection method comprises the basic steps of importing broadcast ephemeris files and observation data of satellites, and calculating the location for observing the satellites and an azimuth angle and an elevation angle of the line-of-sight direction;removing satellites with the elevation angle being lower than a cut-off elevation angle to obtain the number of visible satellites; if the number of visible satellites is greater than a satellite selection number, building a satellite selection template with the satellite geometric structure approaching to the optimal by taking proportional distribution of satellites with a high elevation angle and satellites with a low elevation angle and symmetric distribution of the satellites in the azimuth as a principle; determining the step size of rotation and a rotation interval of the satellite selection template; searching a group of actual satellites which are the closest to the template satellites in the rotating process of the satellite selection template, and calculating weighted PDOP valuesof the actual satellites; enabling a satellite combination corresponding to the minimum weighted PDOP value in the whole rotating process to act as a satellite selection result; and if a certain navigation system only has one visible satellite in the satellite selection result, removing the satellite. The invention provides a satellite selection method with good effects for multi-constellation integrated positioning.