47 results about "Verlet integration" patented technology

A hardware and operating system independent platform and / or run time architecture that implements a configuration and algorithmic based application and process for enabling multiple virtual machines or internal networked physical servers (hosts) to be organized into groups or “realms” in real time and against specific configurable metrics. The configurable metrics include one or more of the following; load or processing capacity availability, cost of CPU processing, location based on risk, importance to business continuity priority requirements, disaster recovery strength and priority, geographic location of host aligned to IP, and any other client specific or custom requirements. A realm manager balances all of these configurable metrics and creates an algorithm to address allocation. The algorithm is fully elastic, allowing for automatic opening and closing of virtual machines to accommodate any internal or external changes.

Pulse integration is utilized on board an optically guided missile or other ordinance device used as a part of a target designation system for extending the lock-on range of the missile by approximately 18%, when a double pulse laser is utilized to illuminate and designate the target. Pulse integration is accomplished with a recirculating delay unit which superimposes the first pulse on the second pulse, such that while the pulses add coherently, noise does not add in phase. The pulse integration technique therefore enhances the signal-to-noise ratio when the missile is at the outer limits of its operating range. When the missile is sufficiently close to the target, doublet decoding is actuated to offer countermeasure resistance. At this point, pulse integration may proceed in lieu of doublet decoding or may be dispensed with in view of the increased signal-to-noise ratio due to the close range of the missile to the target.

Systems and methods for integrating and / or registering a shape sensing fiber in or to various instruments are described herein. Registration fixtures and registration techniques for matching the coordinate system of a fiber to the coordinate system of an elongate instrument or other device are provided. Various systems and methods for integrating a shape sensing fiber into an elongate instrument or other device are also described herein.

The invention discloses an intelligent guarding method based on radar and video integration. The intelligent guarding method comprises the steps that 1) radar monitors and video monitors are distributed in a specified monitoring area; 2) the radar monitors performs real-time monitoring, and when entering of an invasion target is monitored, the three-dimensional position coordinates of the monitored invasion target are outputted and early warning information is emitted, and the video monitored are controlled and started to acquire current synchronous images to be outputted simultaneously; 3) the three-dimensional position coordinates monitored by the radar monitors are mapped into corresponding position coordinates in the synchronous images so that radar detection coordinates are obtained; and 4) the invasion target is identified in the synchronous images according to the radar detection coordinates, and whether the invasion target is a target required to be alarmed is judged according to the image data of the identified invasion target so as to confirm alarm information. The intelligent guarding method based on radar and video integration has advantages of being simple in realization method so that intelligent identification and alarm of the invasion target can be realized and alarm accuracy rate is high.

A receiving method and apparatus for increasing coherent integration length while receiving a positioning signal from transmitters such as GPS satellites. In order to compensate for frequency drifts that may occur in the positioning signal, a hypothesis is made as to the frequency drift, which is inserted into the receiving algorithm. Advantageously, the length of coherent integration can be increased at the expense of reducing the length of incoherent integration while keeping the total integration length the same, the net effect of which is an increase in signal detection sensitivity. The frequency drift hypothesis has any appropriate waveform; for example, approximately linear or exponential. The hypothesized frequency drift can be inserted into the receiver algorithm in any suitable place; for example, the data block may be adjusted for the hypothesized frequency drift, alternatively the reference signal may be adjusted, or the frequency samples of either the data block or the reference signal may be adjusted.

A mechanism is provided for unified management of power, performance, and thermals in computer systems. This mechanism incorporates elements to effectively address all aspects of managing computing systems in an integrated manner, instead of independently. The mechanism employs an infrastructure for real-time measurements feedback, an infrastructure for regulating system activity, component operating levels, and environmental control, a dedicated control structure for guaranteed response / preemptive action, and interaction and integration components. The mechanism provides interfaces for user-level interaction. The mechanism also employs methods to address power / thermal concerns at multiple timescales. In addition, the mechanism improves efficiency by adopting an integrated approach, rather than treating different aspects of the power / thermal problem as individual issues to be addressed in a piecemeal fashion.

The invention relates to an integration learning method for increasing a conversion rate effect in a historical data timeline. Historical data is segmented according to a fixed time interval. For thehistorical data in each time interval, a plurality of uncorrelated models with different structures are trained to carry out model integration. An above integration model result is taken as a new characteristic and the new characteristic is added into time interval data which is nearest to a prediction target. Integration learning model training of the second time is performed. Because of divisionindependence among the time interval data and independence of an internal model of each time interval time data, calculating resources can be fully used to carry out parallel calculation; the data isfully used and simultaneously training time is greatly shortened; and real-time model updating can be conveniently performed.

The invention provides a determination method and a determination device of a satellite orbit. According to the determination method of the satellite orbit, a component technology in subscriber identity module card tool kit (STK) is based on, a Runge-Kutta (RFK) method and a time-integration mode of variable step-size are used, an algorithm formula of RFK 7 (8) controlled by a seventh-order integration and an eighth-order error is taken, the position and the speed of the satellite orbit are calculated, and compared with a traditional algorithm, calculating accuracy and calculating efficiency are improved. The determination method of the satellite orbit effectively resolves the problem that low calculating efficiency and calculating accuracy are caused due to big accumulated error when an existing method is used for solving an equation of satellite motion.

A method of acquiring a weak signal includes selecting a first predetection integration time (PIT) interval for processing a digital intermediate frequency (IF) signal, selecting a number of data bit edges within the PIT, computing a plurality of coherent integrations for each data bit edge, selecting a coherent integration, which corresponds to a most likely data combination for each data bit edge, from the plurality of coherent integrations, updating an incoherent integration total for each data bit edge with the coherent integration corresponding to the selected most likely data bit combination for each data bit edge, comparing the incoherent integration total for each data bit edge with a threshold after a predetermined number of steps of the coherent integration computations and incoherent integration total updates, and identifying a code delay from the incoherent integration. The method may also include determining a code delay from an estimated Doppler shift corresponding to the identified code delay. In this method, the coherent integrations are computed using a circular correlation technique that is performed in a manner so the coherent integrations are not independent from one another in successive steps. Thus, computational efficiencies may be gained from subsequent uses of coherent integrations computed during previous steps. The circular correlation is preferably performed over intervals corresponding to the separation between data bit edges.

The invention relates to the technical field of informatization, and particularly relates to a multi-service integration system for ocean vessels. The multi-service integration system comprises a plurality of video acquisition terminals and a plurality of mobile communication terminals at an access terminal side, the plurality of video acquisition terminals are connected with a POE switch through a first connecting wire, the plurality of mobile communication terminals are connected with a POE switch through a wireless AP, the POE switches are converged and connected to a convergence switch at a convergence layer, the convergence switch is connected to a core switch, the core switch is connected with an IPTV system, a voice switch, a wireless AC and a cloud storage platform, the core switch is connected to a land command center through the Internet in the end, and wired or wireless transmission services for voice, data and images are completed. The multi-service integration system provided by the invention provides voice, data and image transmission services for the ocean vessels, provides wireless network access at the same time, and realizes security monitoring.

A receiving method and apparatus for increasing coherent integration length while receiving a positioning signal from transmitters such as GPS satellites. In order to compensate for frequency drifts that may occur in the positioning signal, a hypothesis is made as to the frequency drift, which is inserted into the receiving algorithm. Advantageously, the length of coherent integration can be increased at the expense of reducing the length of incoherent integration while keeping the total integration length the same, the net effect of which is an increase in signal detection sensitivity. The frequency drift hypothesis has any appropriate waveform; for example, approximately linear or exponential. The hypothesized frequency drift can be inserted into the receiver algorithm in any suitable place; for example, the data block may be adjusted for the hypothesized frequency drift, alternatively the reference signal may be adjusted, or the frequency samples of either the data block or the reference signal may be adjusted.

The invention discloses an inertia auxiliary multichannel mixed type vector tracking method which is applicable to seamless positioning in a weak GPS satellite signal environment. The method is characterized in that: an INS system is introduced, so that during the coherent integration process, generation of more accurate local recurrence carrier frequency can be facilitated by using the velocity information provided by the INS, adverse influence of Doppler frequency change to coherent integration gain is reduced, and the coherent integration time is prolonged. Compared with the traditional incoherent integration method, the method has the following advantages: in an INS / NLSVTL tracking loop, incoherent integration is realized not through calculating the quadratic sum of a plurality of continuous coherent integration in a certain tracking channel but through adopting the method in which square of coherent integration in different satellite tracking channels is summed, so that the influence of square loss is reduced; besides, sufficient gain can be obtained in integral time much shorter than that of the traditional incoherent integration method; finally, the integral time is shorter, so that the influence of Doppler frequency shift to integral gain is smaller.

The invention relates to a model integration dispatching system. The model integration dispatching system comprises a basic parameter input module, a task trigger, a task allocation module and an integrated model which are sequentially connected with one another, wherein the task trigger is internally provided with an angle step size calculator, an angle accumulator and a task triggering module which are sequentially connected with one another; the integrated model is internally provided with a plurality of task function modules; the task trigger is provided with a task function list; task function names in the task function list are in one-to-one correspondence with task function modules in the integrated model. Tasks triggered by the system comprise an initialization task, an angle task and a time task, and the accuracy of the task trigger can be adjusted; compared with a traditional model integration dispatching system, the model integration dispatching system provided by the invention is more comprehensive in task triggering types, higher in universality and higher in task triggering accuracy.

The invention relates to a two-dimensional ocean current Lagrangian coherent structure analytical algorithm. The algorithm is based on a Cauchy-Green right strain tensor, wherein the tensor is obtained in a way that a gradient obtained after particles move for a period of time in a flow field is calculated. Particle movement uses a Runge-Kutta 4 order integration method, and cubic interpolation is adopted for the flow field. In order to improve calculation accuracy, four neighbor points are added on each grid point to calculate the gradient by using a finite difference. The Cauchy-Green right strain tensor is provided with two real eigenvalues, wherein the local maximum value of the large eigenvalue and the local minimum value of the small eigenvalue are seed points of an LCS (Lagrangian Coherent Structure), and the Runge-Kutta 4 order integration is carried out in a non-corresponding characteristic vector field forwards and backwards to obtain a Lagrangian coherent structure. During integration, the direction discontinuity of a character vector is considered. The direction is always kept consistent with the direction of a previous point, and inversion is carried out if the direction differs more than 90 degrees. After one LCS is generated, the LCS seed points in a certain width range of the LCS are set to be ineffective, and an interval between the LCSs is controlled. The Lagrangian coherent structure is an important flow field topological structure, can be effectively applied to the range of ocean current, season-year changes and main flow and branch flow analysis.