13 results about "Pointing systems" patented technology

This invention discloses a two-axis multi-frame spatial beam pointing system based on a follower mirror and its design method, belonging to the field of photoelectric tracking and aiming. The system includes an outer azimuth axis, an outer pitch axis, an inner pitch axis, an inner azimuth axis, and a follower mirror; the inner pitch axis is coaxial with the outer pitch axis and both are hollow axes; the follower mirror is mounted on the inner pitch frame, and its rotation axis is parallel to the inner azimuth axis. This invention compensates for the optical axis tilt caused by the movement of the inner azimuth axis through the following motion of the follower mirror, and establishes an optical axis offset model for parameter optimization to reduce the optical axis offset. Simultaneously, a Coudre optical path change model is established for focusing of the tracking imaging component. Compared with the traditional two-axis four-frame structure, this invention simplifies the Coudre optical path, reduces debugging difficulty, improves the optical chamber ratio, and realizes the effective application of a multi-frame structure in a spatial beam pointing system.

The utility model discloses sighting telescope adjusting component with spiral rotating mechanism relates to sighting telescope technical field. Including spline screw, the outer wall fixed sleeve of spline screw has and adjusts seat, the outer wall of spline screw top is engaged with spline dial table, the inside engagement of spline dial table top has tooth joint piston, the top of spline dial table outer wall and the inside joint of tooth joint piston has locking disc, the inside movable sleeve of locking disc outer wall has rubber ring, and the intuitive display of the number of turns is realized through triple digital indication system: the reference hole guide arrow of adjusting hand wheel top is opened and is guided with the edge scale mark, and every rotation, the reference hole guide arrow is aligned with fixed mark, the top of eccentric buoy is opened and is indicated arrow number mark arrow, and the bottom slider slide rod is along the spiral groove limit sliding groove of limit cam and slides, and every rotation, the arrow number mark arrow accurate direction adjusting hand wheel on corresponding number of adjusting hand wheel.

A distribution system (DS) mapping change method includes: after a non-access-point station (non-AP STA) initiates transition from a first access point (AP) in a multi-AP (MAP) system to a second AP in the MAP system, performing a context transfer procedure to transfer context of the first AP to the second AP, wherein the context includes parameters of traffic between the non-AP STA and the first AP; and performing a DS mapping change procedure to inform a DS of mapping between the non-AP STA and the second AP, wherein the DS mapping change procedure is not handled by reassociation.

The application discloses a movable water surface and underwater integrated offshore interception system, and belongs to the technical field of marine defense. A propeller is installed on each floating body, and an upper computer is installed on each floating body. A navigation light pointing system and a high-precision inertial navigation system are arranged on the floating body, and the navigation light pointing system and the high-precision inertial navigation system are electrically connected with the upper computer installed on the floating body. A mast is arranged on the top of the floating body, a camera of a 360-degree remote omnidirectional video system on the sea and a signal antenna of a MESH self-organizing network offshore base station are arranged on the mast, and the 360-degree remote omnidirectional video system on the sea and the MESH self-organizing network offshore base station are wirelessly communicated with the upper computer. The application adopts a modular assembly design, is convenient to disassemble, replace and store and maintain, has small engineering quantity, and has high concealment and is not easy to be found. The application adopts a cylindrical floating body, a cross propeller and a double-floating body shared mooring design, and the anti-overturning ability, the maneuverability and the offshore stability of the system are improved.

The invention provides a coarse and fine switching method and device in satellite top-crossing tracking and pointing, and the method comprises the steps: carrying out the state estimation and uncertainty quantification based on the instantaneous pointing error of a satellite top-crossing tracking and pointing system at a satellite top-crossing stage, generating and dynamically updating the two-dimensional probability density distribution describing the position of a light spot, and carrying out the dynamic updating of the two-dimensional probability density distribution; fusing with a light intensity distribution diagram influenced by atmospheric turbulence to obtain an effective receiving index, and determining a region of interest for fine aiming detection from probability distribution; performing spatio-temporal clustering analysis on multiple frames of detection data continuously collected by the fine aiming equipment, and calculating the coordinates of a fine aiming tracking point and the identification confidence of the fine aiming tracking point; and predicting the tracking interruption probability based on the atmospheric turbulence prediction data and the probability distribution, performing judgment in combination with the confidence coefficient, and if the judgment is passed, switching the control system to a fine aiming closed-loop tracking mode. According to the invention, rapid, reliable and anti-interference automatic switching from coarse aiming to fine aiming can be realized in a high dynamic scene in which a satellite rapidly passes through the top, so that rapid establishment and stable maintenance of a free space optical communication link are ensured.

The application discloses a kind of based on short weapon competition project's integral system and device thereof.The based on short weapon competition project's integral system, including parameter setting module, hardware sensing module, integral statistics module, fault detection module and judge judging module.The preset parameter of the application is transmitted to judge judging module by parameter setting module, then the obtained sensing signal is transmitted to integral statistics module by hardware sensing module, then the integral condition is obtained by integral statistics module to the sensing signal received and is transmitted to judge judging module, the detection result is obtained by the monitoring data of fault detection module and is transmitted to judge judging module, finally the data collected is fed back to preset judge by judge judging module, and the processing result given by preset judge is recorded in cloud, improve the integral accuracy of short weapon competition project, solve the problem of low integral accuracy of short weapon competition project in prior art.

The method, device and system for initializing a VIO system relate to the technical field of visual positioning and navigation, and the method comprises the following steps: obtaining state information of the VIO system; sending indication information to a control device of a self-moving device according to the state information, the indication information being used for instructing the control device to control the self-moving device to first be stationary and then be started; and when it is determined that the self-moving device has been stationary, performing a static initialization operation on the VIO system to determine an initial value of the VIO system, the state information comprising at least one of the following: the VIO system initiating a first signal, the first signal being used for indicating that the VIO system is about to be initially started, or data abnormality occurring in a data processing process of the VIO system, or a preset time duration being experienced since a time point at which a last static initialization operation is completed. Based on the scheme, the VIO system can be provided with a condition for static initialization, so as to implement a static initialization operation on the VIO system, and the efficiency of initialization can be improved.

The present application relates to the technical field of bridge engineering test, and specifically relates to a two-dimensional structure automatic control vibration test device, which comprises a transverse track, two groups of along-wind tracks and model units, the transverse track is arranged above the along-wind tracks, one group of the along-wind tracks is fixed to the ground, and the other group is fixed to the top outer keel, the model unit comprises two groups of model systems and two groups of model bodies, each group of the model system comprises a displacement rod, a hanging point system, a spring system and a detection unit, the detection unit is arranged between the hanger and the two groups of along-wind tracks; an electric exciter is instantaneously started to drive the model system to drive the model body to vibrate, the detection unit collects vibration data, through integration of a double-model parallel test platform on a set of device, quick switching and synchronous comparison test of various boundary conditions such as sliding and fixing are realized, and the limitations of single function and inflexible boundary simulation of traditional devices are overcome.

The invention discloses a high-precision dynamic pointing calibration method for a laser communication system, which not only has an online calibration function, but also has a dynamic pointing deviation pre-compensation function, and establishes a compensation reference value (initial calibration is taken as a reference) on the premise of completing the online calibration function. And the deviation value of each online calibration is compensated and corrected on the basis of the reference value. Through the above mode, the laser communication pointing system is successfully converted from a static tool needing manual intervention to a dynamic intelligent agent with self-learning and self-optimization capabilities, and the performance of the laser communication pointing system in a complex and long-distance application scene is greatly improved.

The present invention relates to an indication system for generating an indication (114). The system includes: at least one indicating device (106), at least one detection device (104) configured to monitor at least one area (109a, 109b) inside a building to provide monitoring data, and a control unit (108). The control unit (108) is configured to: detect at least one predefined object (110) with a specific need based on the monitoring data obtained from the at least one detection device (104), and in response to the detection of the at least one predefined object (110), control the at least one indicating device (106) to generate a visual indication (114), the visual indication (114) including guidance information to a door device (102a) assigned to the detected at least one predefined object (110). The invention also relates to a method for generating the indication (114).

Provide a system. 【Solution means】 Means for analyzing the user's learning history to estimate the area of interest, Means for selecting and displaying appropriate learning materials based on the estimated area of interest, Means for analyzing voice commands to operate learning content, Means for promoting learning in a game-like manner by means of a point system and a reward system, Means for managing the learning schedule and giving reminders at set times, Means for providing the learning progress data to the guardian, Means for providing feedback to the user using visual information and auditory information to achieve two-way learning, Means for providing customized quizzes and information based on the user's interests, Means for providing virtual rewards when a specific point is reached, Means for generating prompts based on the learning theme A system including.