47 results about "Reconfiguration algorithm" patented technology

A Centralized Resource Management (CRM) system that supports the sharing of all the transponders in a WXC node, i.e., any spare transponder can be reconfigured to accommodate any drop channel, regardless of wavelength or input port. Consequently, network restoration in case of network failures is supported as well as the ability to reconfigure as a result of dynamic traffic requirements in the network. CRM advantageously is applied to conventional WXC node as well as WSS-based WXC nodes in the WDM networks. Three CTM schemes which manage the transponders in the WSS-based WXC node are described along with reconfiguration algorithms for an optical switchless CRM solution.

The invention discloses a pulse UWB (Ultra Wide Band) communication system based on a CS (Compressed Sensing) theory. A digital signal (X) transmitted by a transmitting terminal is effectively observed by introducing signal detection in the CS theory through a sparse algorithm in a digital signal processor, combining a random precoding module added at the transmitting terminal and matching with apulse generating module, a UWB channel and a low-speed sampler, and a common recovery reconfiguration algorithm in the CS theory is utilized to recover and reconstruct the digital signal (X) and realize communication. In the communication system provided by the invention, a plurality of parallel correlators and low-speed samplers needed in a first parallel scheme are not needed at a receiving terminal so that the problem of high hardware implementation complexity in the parallel scheme is solved; meanwhile, the low-speed sampler is directly used at the receiving terminal for sampling, and an analogue information converter is not used, so that the influence of the causality of a low-pass filter in the analogue information converter on observation is avoided and the problem of sparse observation matrix caused by the causality in a serial scheme is solved.

The invention discloses a method for improving an erasure code based storage cluster recovery performance. The method comprises that a reconfiguration control node sends reconfiguration read requests to reconfiguration source nodes and sends reconfiguration write requests to reconfiguration destination nodes simultaneously, all reconfiguration source nodes implement reconfiguration read optimization according to reconfiguration read requests, all reconfiguration destination nodes implement reconfiguration write optimization according to reconfiguration write requests simultaneously, all reconfiguration source nodes read data participating in reconfiguration of this time from a disc respectively and divide the data into a plurality of data blocks respectively, all reconfiguration source nodes transmit the plurality of data blocks to corresponding reconfiguration destination nodes simultaneously through networks respectively, all reconfiguration destination nodes adopt a reconfiguration algorithm to reconfigure received data blocks coming from all reconfiguration source nodes respectively, and all reconfiguration destination nodes return data blocks obtained through reconfiguration to a client side respectively. By the aid of the method, the problem of transmission of a large amount of additional data caused by existing centralized decoding methods can be solved.

The invention provides a video key frame abstract extraction method based on neighbor maintenance and reconfiguration. The video key frame abstract extraction method comprises the following steps: obtaining a video from a video database, and taking the video as a target video of a key frame abstract to be extracted; aiming at each target video, extracting each frame picture in the video to be used as an alternative picture library of the video key frame abstract; obtain global characteristics and partial characteristics of each frame picture from the alternative picture library, and representing each frame picture as one vector; calculating the similarity between the frame pictures to obtain a neighbor relation between the frame pictures; selecting an optical key frame picture which comprises main content of the video and has the smallest redundant information from the alternative picture library by adopting a neighbor maintenance and reconfiguration algorithm; and extracting the selected key frame picture to form an abstract of the target video.

The invention discloses a multi-strategy image fusion method under a compressed sensing framework, mainly solving the problems of large calculated amount, high time complexity and large storage space of the traditional image fusion method. The multi-strategy image fusion method comprises the following implementation processes: inputting original images A and B and dividing the original images A and B into local images X1 and X2 of C*C in size; respectively carrying out Fourier transformation on X1 an X2 to obtain coefficient matrixes y1 and y2; observing y1 and y2 respectively by adopting a Fourier coefficient low-frequency full variable-density observing model to obtain observation vectors f1 and f2; calculating harmonic coefficients H1 and H2 and frequency-spectrum matching degree S according to f1 and f2; selecting a threshold T and calculating a weighting coefficient; comparing the weighting coefficient, the threshold and the frequency-spectrum matching degree to calculate a fused observation vector f; and iterating the observation vector f for twenty times by using a Split Bregman reconfiguration algorithm to finally obtain a required fused image. Compared with the traditional fusion method, the multi-strategy image fusion method provided by the invention has the advantages of low calculation complexity and good fusion effect, and can be used for video tracking, target recognition and computer vision.

The invention discloses a singular value decomposition-based compressed sensing noisy signal reconfiguration system, which comprises (1) an initial module for running the system, namely an initial interface for running the system, (2) a compression module and (3) a reconfiguration module, wherein an original signal to be compressed is selected by using the compression module by a user; data compression is performed on the original signal by using an improved observation random matrix; the compression of the original signal is realized by multiplying the original signal by the improved observation random matrix; a compressed sensing signal is stored; the selected and compressed sensing signal is reconfigured by using the reconfiguration module by the user through a reconfiguration algorithm to form the original signal; the reconfigured original signal is a reconfigured signal; and meanwhile, the reconfiguration accuracy of the original signal and the reconfigured signal is obtained. The system has high reconfiguration accuracy, superior robustness and a wide application range.

The invention provides a satellite gyroscope group fault detection, separation and estimation method based on equivalence relation and wavelet transform numerical differentiation, relating to a security monitoring technology method of a movement gyroscope group in the aerospace field. The satellite gyroscope group fault detection, separation and estimation method provided by the invention comprises the following steps of: step 1, detecting whether a satellite inertia gyroscope assembly has a fault or not through an equivalence relation method, if the satellite inertia gyroscope group assembly has no fault, skipping to a new period, otherwise, carrying out step 2; step 2, if parameters output by a satellite posture system are four elements, directly entering a step 3; and if the parameters output by a satellite posture sensor are eulerian angles, converting into the four posture elements; step 3, obtaining numerical differentiations of the four posture elements through approximation analysis by using an algorithm based on the wavelet transform numerical differentiation; and step 4, approximately obtaining the faults of the satellite gyroscope sensor group through a reconfiguration algorithm, so as to detect, separate and estimate the faults. The satellite gyroscope group fault detection, separation and estimation method provided by the invention effectively reduces the calculation amount, can diagnose early-stage slowly varying faults, and is useful when the gyroscope sensors have the fault.

The invention relates to a scheduling method of a cluster type DC charging system of a reconfigurable annular bus, and belongs to the field of power and electron technologies and new energy automobilecharging infrastructures. The main application object of the scheduling method is a reconfigurable annular bus based cluster-type DC charging station; a vehicle entering the charging station is guided by the scheduling system so as to enter a reasonable parking space, so that the maximum advantage of the reconfigurable annular bus is played and efficient distribution of the charging power is realized. Meanwhile, when the concurrent charging number is big and the DC charging demands of all the connected electric vehicles cannot be met, the scheduling method automatically adjusts and reconstructs a bus section which is composed of multiple segmental buses based on the priority by adopting a translation reconfiguration algorithm, realizes optimal combination of charging modules and optimal power distribution. The scheduling scheme is combined with the reconfigurable annular bus; and compared with the existing technologies such as charging pile and flexible charge, the scheduling method can greatly reduce the number of linked switches and the system complexity.

The invention provides a method for solving a fault-tolerant upper bound of a reconfigurable multiprocessor array and belongs to the field of reconfiguration of the multiprocessor array. According to the method, processor units which are not usable logically are labeled in the processor array, local area reversal is carried out on adjacent rows which can cause misjudgment easily, the maximum usable logic column number is obtained, then the fault-tolerant upper bound is obtained, and then advantages and disadvantages of an existing reconfiguration algorithm are evaluated by using the fault-tolerant upper bound. By means of the method for solving the fault-tolerant upper bound of the reconfigurable multiprocessor array, the more accurate fault-tolerant upper bound is obtained, and therefore the advantages and the disadvantages of the existing reconfiguration algorithm can be evaluated more accurately; and the range of replaceable damaged processors is further limited, and therefore results can better conform to production reality.

The invention relates to an off-axis digital holographic measurement device capable of flexible zooming, and the device is technically characterized in that a laser beam generated by a horizontal laser 1 is reflected by a first reflector 2, and an optical path is changed into a vertical path; the laser beam enters a beam-expanding collimation unit 3, and is reflected by a second reflector 4, and the optical path is changed into a horizontal optical path; and then the laser beam passes through an electric control zoom lens 5 and a microscopic objective lens 6 to enter a spectroscope, thereby generating two light waves, wherein one light wave is reflected by a plane mirror 8, and then serve as reference light to enter imaging equipment 10, and the other light wave is reflected by the surface of a measured object 9 and serves as objective light to enter the imaging equipment 10; the plane mirror 8 is adjusted so as to control the inclined angle between the reference light and the objective light, thereby enabling the objective light and the reference light to interfere with each other to generate an off-axis digital holographic image which is recorded by the imaging equipment 10; finally a numerical value reconfiguration algorithm is calculated and the information of the measured object. The device employs the electric control zoom lens 5, has a function of flexible zooming, avoids mechanical movement, greatly improves the adjustment speed and accuracy in an adjustment process of an amplification factor of a system, is compact and stable in structure, and can be used for the three-dimensional shape and appearance measurement of a micro-optic element, a microelectronic mechanical system and a micro-optical electro-mechanical system.

The invention relates to a method for implementing a low power hybrid Cache of an embedded device, belonging to the field of the hierarchical structure design of the computer memory. The method is performed in the embedded device and comprises the following steps of: configuring the initial states S0 of an instruction Cache and a data Cache, a standby high capacity state S1, a capacity competition state S2, a standby low capacity state S3 and a capacity adjustment state S4, respectively; establishing boundaries and a counter; whenever a program segment changes and a next program segment is started, determining the switching states and related settings of the instruction Cache and the data Cache by determining the following conditions one by one. With the method provided in the invention, once the program segment-based PBCRA reconfiguration algorithm of the method is adopted, the power consumption is reduced by 20.4%-41.7% with seldom increasing hardware; and the Cache jittering is reduced. Besides, as the number of paths of the instruction Cache and the number of paths of the data Cache are variable, the collision deletion can be reduced and the jittering can be avoided; therefore, the stable system operations are ensured.

The invention discloses a distribution network reconfiguration algorithm based on a network sub-dividing ring method. The distribution network reconfiguration algorithm based on the network sub-dividing ring method comprises the steps that 1, node state information and branch state information are read from a node txt document and a branch txt document; 2, a topological structure diagram is formed according to the read information, and a power network topological structure diagram is determined according to the connection relation between a branch and a node and relevant information; 3, judgment is conducted on whether a network is a correct network or not, and network judgment comprises the judgment of whether the network is an active network or not and the judgment of whether the network is a radial network or not; 4, by the adoption of the network sub-dividing ring method, sub-dividing is conducted on rings based on the current network state; 5, real-number encoding is conducted on the rings sub-divided in the fourth step; 6, the real-number encoding of all the ring sections are sequentially edited to be a chromosome, wherein correction of the chromosome is included; 7, a solution is obtained, and parameters such as size of network loss and on-off times are given. The distribution network reconfiguration algorithm based on the network sub-dividing ring method has the advantages that branch overloading and voltage exceeding are eliminated, feeder load is balanced, and the network loss is minimized.

The invention belongs to the technical field of attitude and orbit control, and relates to a method for implementing measurement on a high-frequency attitude of a spacecraft by utilizing a low-frequency attitude determination sensor. The method comprises the following steps of: S1, acquiring spacecraft original attitude estimated values by utilizing a conventional attitude determination method; S2, fusing N groups of spacecraft original attitude estimated values with different frequencies; S3, recovering high-frequency-band attitude data from the fused spacecraft original attitude estimated values. The method disclosed by the invention can implement spacecraft high-frequency attitude estimation only by the attitude determination sensor under a conventional sampling frequency, and can reachhigh accuracy; the method utilizes sparsity of a spacecraft high-frequency attitude quantity in a frequency domain; by a compressed sensing technology, the spacecraft high-frequency attitude data canbe recovered from low-frequency attitude measurement data; a simulation result proves that the method can measure a high-frequency attitude and has good robustness for an error. By adding the attitude determination sensor and improving a reconfiguration algorithm, accuracy of measuring the high-frequency attitude can be further improved.