150results about How to "Improve update rate" patented technology

A building monitoring system is disclosed that includes a bi-directional radio link between a master and a number of remote units, wherein the master unit schedules the transmission times of the remote units to avoid collisions.

The invention discloses an aircraft-mounted multi-navigation-source comprehensive navigation simulation system. In the system, each navigation simulation sub system really simulates functions, performances and interfaces which are same as those of a model according to a self-navigation principle. A scheduling system responds a display control command, a load command and load data information sent by a mission system, and drives the navigation simulation sub systems to perform simulation calculation with combination of environment simulation data. A combined navigation system, with an INS simulation sub system as a main navigation source, performs integrated navigation based on and fault detection federated Kalman filter with GNSS, TACAN and IFDL as auxiliary navigation sources. Information fusion is achieved through a generalized federated Kalman filter in a two-stage structure constructed through a federated filter algorithm, wherein a main filter performs total information fusion and performs information distribution and information reset to each sub filter. Optimal estimation is carried out to a result of each sub filter through a dynamic information distribution coefficient. Meanwhile, the INS simulation sub system is subjected to closed-loop negative feedback correction through an estimated error by the system.

A method of, apparatus for, and computer-readable medium for rapid, real time kinematics determination requiring lowered information transmission for position updates than traditional RTK systems. Position signals are received from a base station and roving system and a compressed position signal is received from the base station. A position estimate using an integrated method is determined using the received position signals from the base station and the roving system and the compressed position signal from the base station. Ambiguity resolution of the position estimate is enhanced by applying a quality control procedure using derived validation criteria. A second position estimate is derived based on the enhanced ambiguity resolution. Because of the use of the compressed position signal smaller transmissions may be performed at a more rapid rate providing a higher position update rate.

A method for obtaining an increased update rate in an indoor acoustic positioning system (300) for determining the position of one or more identification tags (100), comprising transmitting from an identification tag (100) an acoustic spread spectrum sequence that is unique to the identification tag (100), receiving the spread spectrum sequence in a detector unit (200) and recording the arrival time of the spectrum sequence, and comparing the spectrum sequence with stored values of the spectrum sequences used by all the identification tags (100) in the positioning system (300). A system (300) for obtaining an increased update fate in indoor acoustic positioning comprises at least one identification tag (100) that transmits a spread spectrum sequence, at least one detector unit (200) that detects and records the spread spectrum sequence and its arrival time, a network (215) that connects several detector units (200) together by signals, and at least one central unit (310) for collecting and interpreting processed data from the detector units (200) via the network (215), and processing means in the central unit(s) (310) for determining the position of a specific identification tag (100).

A method for modifying a planar image slice in a CT scanner having a predetermined reconstruction angle, comprising: reconstructing an image of the slice using initial X-ray attenuation data acquired along an initial scan path sector; acquiring additional X-ray attenuation data along an additional scan path sector in a vicinity of the axial position of the slice, the sector having an angular extent substantially less than the reconstruction angle; and modifying the image, to provide a modified image of the slice, responsible to the additional attenuation data.

A system, including both an OLTP database and a warehouse database, that is configured to manage the coordination between the OLTP database and the warehouse database. An aspect relates to a combined OLTP and warehouse database which manages duplicate copies, in both the OLTP database and the warehouse database, of data expected to have a relatively high update and query rate. Data which has a low update and query rate is removed from the OLTP database, such that it remains only in the warehouse database. Updates of the duplicate copy data are performed in the OLTP. Periodically, for example every several minutes, data recently changed in the OLTP database is copied to the warehouse database. Queries are optionally primarily handled by the warehouse database, and are supplemented, when necessary, by data from the OLTP database.

A cellular communication system comprises a base station (101) and a plurality of user equipment (103). The base station (101) comprises a combine processor (111) which combines user equipment specific information, such as power control commands or synchronisation information, for a plurality of user equipment (103). An encode processor 113 encodes the combined user equipment specific information and a transceiver 109 transmits the combined user equipment specific information in a minimum transmission resource unit of the cellular communication system. The minimum transmission resource unit may be a single channelisation code in a single time slot. The UE (103) comprises a receiver (115) for receiving the minimum transmission resource unit and a UE data processor (117) which decodes the minimum transmission resource unit and extracts the user equipment specific information for that UE (103). The invention may provide a more efficient communication of small data blocks.

The subject process accepts the data from a kinematic tracker and maps them to fuzzy set conditions. Then using a multitude of defined membership functions and fuzzy logic gates, generates sensor mode control rules. It does this for every track and each sensor. The Rule with the best score becomes a sensor cue, which is used to place the sensor into one of three operating modes. If there are ambiguities do to one or more vehicles coming in to close proximity to each other process compares radar profiles of vehicle to those stored in an “on the fly” data base to eliminate the ambiguities.

A device for controlling a satellite tracking antenna. An azimuth drive is configured to impart an azimuthal rotational motion to the antenna about an azimuth axis. An elevation axis drive is configured to impart a rotational motion to the antenna about an elevation axis orthogonal to the azimuth axis. A tilt axis drive is configured to impart a rotational motion to the antenna about a tilt axis. The tilt axis is connected to the elevation axis in such a way that the rotational freedom of motion of the antenna about the tilt axis is dependent on the elevation angle such that: at an elevation angle of 0° the rotational freedom of motion of the antenna about the tilt axis corresponds to the azimuthal rotational motion; at an increasing elevation angle the rotational freedom of motion about the antenna successively transcends into a roll rotation; and at an elevation angle of 90° the rotational freedom of motion of the antenna about the tilt axis corresponds to a roll rotation about a roll axis orthogonal to the azimuth axis and to the elevation axis. A control controls the operation of the azimuth axis drive, the elevation axis drive, and the tilt axis drive. The control includes a true north seeking gyro for tracking position, orientation, direction and speed of movement of the device. The control further includes an additional gyro comprising an elevation gyro axis arranged to sense the elevation movement and a tilt gyro axis arranged to sense the tilt movement, so as to minimize the angular velocity of the antenna pointing vector. A method for controlling a satellite tracking antenna, and a vessel including the device.

A dietary supplement composition comprising a therapeutically effective amount of at least one sirt 1 activating agent, a therapeutically effective amount of at least one Qi activating agent, and a therapeutically effective amount of at least one adaptogen is disclosed. An optional herbal treatment for stress-related deep wrinkles comprises chronic oral administration for at least two weeks of a beverage containing an effective amount of a valerian root extract sufficient to provide a desired reduction in the appearance of the deep wrinkles. A photoprotective agent may also be included. Also included are a microcirculation increasing agent. Also optional are an herbal toner and topical cellulite product.

The invention discloses a visible light navigation sensor, which employs visible light spectrum bands with different widths and a dual-channel optical system to image different objects to independent areas of a target surface of a same photodetector. The optical system is divided into two independent viewing field channels which respectively image quasars and stars. The photodetector convert images of the quasars and the stars into simulating signal to output. An electrical system processes the stimulating signal and converts to obtain digital images. At last, an image and attitude computing element respectively processes the quasar image information and the stars image information to compute and obtain a quasar center vector, an orbit height and an inertial attitude needed by satellite navigation. The visible light navigation sensor employs the technique of the visible light spectrum bands with different widths, sub-viewing-fields and sub-image-areas to resolve the problem that the photodetector simultaneously images the quasar and the stars on the same target surface. In addition, the visible light navigation sensor has a normal imaging mode and a binning imaging mode.

The invention discloses a mars ultimate approach segment autonomous navigation method based on multi-source information fusion, relates to a mars ultimate approach segment autonomous navigation method and belongs to the technical field of deep space exploration. The method is characterized in that optical measurement, radio measurement based on a mars orbiter and X-ray pulsar measurement information are combined based on a mars ultimate approach segment dynamical model, are effectively fused in the application range based on a federated filtering structure and are standby for one another, and the advantages of various navigation systems are fully exerted; on the basis of establishing a mars ultimate approach segment state model and a mars ultimate approach segment autonomous navigation model, detector real-time navigation status information is resolved by the utilization of an integrated navigation filtering algorithm of a federation structure to realize the mars ultimate approach segment autonomous navigation. According to the mars ultimate approach segment autonomous navigation method, the precision and the real time of the mars ultimate approach segment autonomous navigation can be improved, and the reliability and the fault tolerance of a navigation system can be improved. The method can provide a technical support for the design of a future mars exploration task autonomous navigation solution.

The invention discloses a star sensor image processing method. The method includes the steps that star point extraction threshold values of all channels are calculated; according to the star point extraction threshold values of all the channels, regions which suffer stray light disturbance are removed, pixels, of which the gray values are higher than the star point extraction threshold values, in the channels are synchronously screened out line by line according to the channels and do not suffer stray light disturbance, the screened-out pixels are stored, and the screening result is recorded; according to the screening result, the screened-out pixels are recognized one by one, mass center feature parameters of possible star points are calculated, recognizing results are recorded, and row coordinates and gray value information of the pixel on the rightmost side of the possible star point in each line are stored; according to the line coordinate and gray value information of the pixels on the rightmost sides of the possible star points and the recognizing results, the star points and noise points are judged, and the noise points are removed. The invention further discloses a star sensor image processing system. The star sensor image processing method and system are good in function of resisting stray light. Under the condition that the area array of a detector is substantially increased, a high data updating rate still can be kept.

The subject invention provides a data structure and method for IP lookups, insertions, and deletions using a dynamic tree bitmap structure (DTBM) that utilizes an array of child pointers for each node instead of the typical TBM approach using one pointer to an array of children.

The invention provides a train integrated navigation method based on precise point positioning. The method comprises the following steps: firstly, recording an original observation data file by a train satellite receiver; secondly, calculating an issued high-precision satellite orbit and a satellite clock error product according to an IGS (Inertial Guidance System) data processing center, resolving position coordinates of train operation, and calculating correction parameters such as whole cycle ambiguity and receiver clock errors; thirdly, combining the correction parameters with train three-dimensional attitude information with high update rate, which is measured by an inertial navigation system to provide high-precision train positioning information and improve positioning continuity and short-time precision. According to the method, the problem that a differential reference station has distance limit for satellite positioning precision can be solved by using double-frequency phaseand a pseudo-range observation value of a single satellite receiver; train position information with high precision and high update rate is obtained by combining with the inertial navigation system, and thereby higher flexibility and lower construction and maintenance cost are realized.

An improved architecture for a network search engine (NSE) is disclosed herein as including an interface manager, one or more levels of a splitting engine, an array of data processing units (DPUs), and a cascade block. A method for using the improved NSE architecture to form an efficient pointer entry database is also provided. As described herein, the improved NSE architecture simultaneously provides high speed, search throughput, update rate and capacity, coupled with low power and fixed latency searches for all search key widths.

The invention discloses a star sensor information processing method, which includes the following steps: designing a system management module and an application algorithm module, realizing the separation of the system management module and the application algorithm module, and separating the parallel process from the serial process; realizing FPGA / ASIC and The communication protocol of the GNC system; FPGA / ASIC processes the image while generating the detector driving sequence; controls the working mode of the star sensor according to the GNC system command and frame period signal; the CPU completes the star map recognition, star tracking and Attitude solution. Compared with the prior art, the method has the advantages and beneficial effects that it is beneficial to the improvement, upgrading and development of the star sensor algorithm, and improves the data update rate of the star sensor.

The invention relates to a resolving distance-velocity ambiguity method on a basis of changing signal rate, comprising the following steps of selecting different signal time widths to design N pulse signals on the premise of invariable pulse signal bandwidth and pulse repetition frequency; transmitting the pulse signals according to timing sequence and receiving echo signals of the pulse signals through a radar; performing matched filtering and judging whether to realize effective pulse pressure or not by utilization of a designed matched filter, and obtaining the distance ambiguity number and calculating an unambiguous distance and an unambiguous velocity.

A system is provided that includes an optical arrangement, an assembly of a plurality of detectors, and a signal processor. The optical arrangement is capable of viewing a scene that includes an object, where the scene is capable of moving through a field of view of the optical arrangement during each of a plurality of transit periods. The detectors of the assembly are arranged in a vertical scanning direction corresponding to a direction of movement of the scene, and are separately capable of producing an image of the object for each transit period in accordance with a time-delay integration technique. The signal processor, then, is capable of determining the angular position of the object for each transit period based upon the images produced by the detectors.

A hybrid vehicle intermittently operates and stops an engine, travels through control over torque generated by the engine and torque generated by a second motor generator, causes a fuel vapor gas purge system to carry out purging of fuel vapor gas when a predetermined condition, including a condition that a coolant temperature is higher than or equal to a permissible temperature, is satisfied, and sets the permissible temperature to a value lower when a specific driving operation state that includes a state where the number of times of accelerator operation per unit time is higher than or equal to a threshold has been detected than when the specific driving operation state has not been detected. When the specific driving operation state has been detected, the hybrid vehicle increases the updating rate of a concentration learned value of fuel vapor gas, and decreases the rate of increase in target purge rate.

The invention relates to a natural biological composition for preventing and treating agricultural pests and a preparation method thereof. The natural biological composition is characterized by comprising the following raw materials and auxiliary materials in parts by weight: 20-50 parts of fine Elsholtzia, 60-80 parts of organic solvent (low-carbon alcohol), 4-8 parts of synergist, 1-3 parts of surfactant and 900 parts of deionized water. The effective active ingredients of the fine Elsholtzia are terpene phenolic compounds and are obtained by mixing Orthodonfordii, majoram and 2-4 kinds of vanillon, Elsholtzia stauntonii, Elsholtzia flava and Elsholtzia densa plants through ultrasonic oscillation extraction or percolation of the organic solvent. The composition of the invention is a natural biological pesticide having the advantages of safety, no environment pollution and no drug residues; the main raw materials used in the natural biological composition are effective active ingredients in two kinds of labiate accepted all around the world; and the additive, the surfactant and the organic solvent are mixed scientifically and reasonably to prepare an environment-friendly pesticide by adopting the advanced production technology.

The invention relates to a method for extracting fixed star image coordinates in real time based on a field programmable gate array (FPGA). According to the method, fixed star imaging of a star sensor adopts a sub pixel technology, the center of mass of the fixed star image coordinates is acquired through a center-of-gravity method, and only a gray value of the previous column of coordinates of the current row of the current image pixels and a gray value of the previous row of coordinates of the current column are adopted in the process of extracting the fixed star image coordinates. According to the method, after analog / digital (A / D) conversion is completely changed into digital quantity, the fixed star image coordinates of the image are immediately extracted. Therefore, the process that the star map data is required to be read from a static random access memory (SRAM) in the process of extracting the traditional fixed star image coordinates is avoided in the process of extracting the fixed star image coordinates. According to the method, the process of saving a star map to the SRAM and the process of extracting the fixed star image coordinates from the star map are completely parallel; and therefore, the time of extracting the fixed star image coordinates is reduced, the real-time property and the data updating rate are improved, and further the dynamic performance of the star sensor is further improved.

The invention provides an essential oil feed additive for drinking water, a preparation method and use thereof. The formula of the essential oil feed additive for drinking water includes: cinnamaldehyde, thymol, carvacrol, medium chain triglyceride, and a carrier. The preparation method includes: proportioning various plant essential oil reasonably, then adding medium chain triglyceride, and carrying out high pressure homogenization to obtain an oil-in-water type essential oil energy emulsion. The efficient green plant essential oil feed additive for drinking water provided by the invention can effectively improve the feed intake of pigs, enhance health level of the body, increase piglet weight gain, provides energy for sows, and improve the production performance of sows.

A method for updating a memory is disclosed to increase a memory update rate. The method for updating a memory includes detecting a memory block to be updated among a plurality of memory blocks of a memory; and updating only the detected memory block.

The invention discloses a real environment navigation multipath real-time simulation method, a real environment navigation multipath real-time simulation device, a medium and electronic equipment. Themethod comprises the following steps: updating a real-time scene according to real-time dynamic parameters of a receiver carrier, a receiver antenna and a visible satellite; calculating a direct pathand a diffraction multipath path set DiffractPaths of the satellite signal to the receiver antenna; utilizing a test ray set RAY to obtain all reflection / transmission multipath path sets MultiPattersat one time; calculating power attenuation, time delay and Doppler data according to the set MultiPaths, the set DiffractPaths, the direct path coordinates and the like; generating an analog navigation signal according to the power attenuation, time delay and Doppler data to perform multipath real-time simulation; and repeatedly executing the steps according to a set updating period until the simulation is finished. According to the invention, the updating rate and the real-time performance during navigation multipath simulation in a complex 3D scene are improved.