50results about How to "Reduce the number of searches" patented technology

The invention discloses a method for realizing high-precision location based on Big Dipper system civil carrier phase combination. The method comprises the steps of calculating the original user position and utilizing the original user position to calculate the GEO superwide lane whole circle ambiguity; taking the integer of the observed quantity of GEO superwide lane combination, calculating the GEO wide lane whole circle ambiguity (img file='DDA00002471851000011.TIF' wi='160' he'='47'/), calculating the error of double difference observed quantity of the GEO superwide lane combination, and determining the searching range of the ambiguity of a GEO wide lane; conducting dimensionality reduction search on the GEO wide lane whole circle ambiguity (img file='DDA00002471851000012.TIF' wi='134' he'='47'/) to obtain the accurate value of the GEO wide lane whole circle ambiguity; selecting an MEO/IGSO satellite to initially calculate the wide lane whole circle ambiguity; utilizing the ambiguity combined relationship between a superwide lane and a wide lane to obtain the double difference ambiguity on a B1 frequency point, a B2 frequency point and an S frequency point; utilizing the sum of the double difference ambiguity on the B1 frequency point, the B2 frequency point and the S frequency point to receive carrier phase of machine measurement and conduct planet base double difference location, and calculating the high precision position of a user. Through the method, the purpose of quick high precision location of Big Dipper carrier phases is achieved.

One embodiment of the invention provides a duplicated data search method and equipment. The method comprises performing partitioning treatment on received data to obtained at least two data partitions, grouping the at least two data partitions to obtain at least one data packet, performing similarity Hash calculation on each data packet to obtain a Hash value of the data packet, and obtaining a first Hash value having a similarity with the Hash value of the data packet larger or equal to a first similarity threshold from a Hash value storage list. If the similarity between the Hash value of the data packet and the first Hash value is larger or equal to a second similarity threshold, the data partitions in the data packet are subjected to duplicated block research. The technical scheme of the invention improves the duplicated block query efficiency and improves the whole performance of data de-duplicated technology.

The invention discloses a truck transporting supply and demand matching method based on a mobile phone position service. A truck terminal, a goods owner terminal and a control system are communicated by mobile internet. The truck transporting supply and demand matching method based on the mobile phone position service particularly comprises the following steps: the registered truck terminal and goods owner terminal positioning own real-time positions through the mobile phone position service and transmitting the real-time position data to the controlling system; the truck terminal transmitting truck source information to the controlling system, and then controlling system matching the truck source information in near-to-far sequence according to distance from goods starting places to truck starting places; the goods owner terminal transmitting goods source information to the controlling system, and then controlling system matching the goods source information in near-to-far sequence according to distance from the truck starting places to the goods starting places. The truck transporting supply and demand matching method based on the mobile phone position service has the advantages that matching information is real-rime and accurate, truck drivers and goods owners can real-time know mutual actual information immediate existing nearby, and the truck drivers can achieve goods allocating without inputting the starting places and destinations.

The present disclosure provides example query expansion methods and systems. A query input by a user is received. A normalized query of the query is determined according to the query. The normalized query is used as an expansion term of the query to implement query expansion. For example, session information in a search log of the user is obtained. All queries appearing in a single session are obtained and a number of votes for each query is calculated or counted. A vote similarity between a single query and a target query is determined and a correlation degree between the single query and the target query is determined according to the vote similarity. A normalized query of the target query is determined according to the correlation degree. The present techniques accurately expand queries and reduce query times, thereby improving system response speed and processing efficiency.

The invention discloses a pseudo-code-Doppler fast acquisition method of direct spread spectrum DPSK signal under high dynamic state, which comprises the following steps: firstly, downconverting the received intermediate frequency direct spread spectrum DPSK signal by carrier wave; then the Doppler frequency offset is captured by nonlinear transform combined with FFT. Then the carrier wave is corrected by Doppler frequency offset. Then the DSSS DPSK signal is downconverted by the modified carrier wave. Finally, the code phase compression correlator is used to search the DPSK signal compensatedby Doppler and multi-channel continuous-phase local pseudo-code to obtain the pseudo-code estimation. The invention can realize acquisition of DSSS DPSK signal under high dynamic state, the joint estimation of pseudo-code phase and Doppler frequency offset has smaller error performance, better pseudo-code phase acquisition performance and shorter acquisition time, which ensures that the receivedsignal has a better rough synchronization before entering the signal tracking processing module, and has lower complexity, so it has strong practical value.

The invention provides an interframe rapid video transcoding method applied to from H. 264 to HEVC. According to H. 264 code stream information and HEVC interframe coding information, for the interframe coding part in an H. 264 to the HEVC transcoder, a fast mode decision and motion estimation method is adopted. With regard to a CU with the depth of 0, 1 layers, combined with H. 264 code stream decoded information and HEVC coded information, a 2N * 2N in-advance determination threshold and an asymmetric motion partition (AMP) determination threshold are obtained, and then the search condition of its PU is determined. For the motion estimation part, the motion vector search range and the motion vector search precision are determined through the H. 264 decoding information. The motion vector search precision is divided into three parts of the integer pixel precision, the sub-pixel precision and the zero motion vector. The method can greatly reduce the computation complexity of interframe coding in the transcoding process from H. 264 to HEVC.

The invention discloses a quick term marking method, which comprises the following steps of: establishing a prefix table and uploading the prefix table into a memory, reading characters which comprise at least one sub-string; extracting one sub-string from the characters and searching for a term in the prefix table by using the sub-string; and recording current searched sub-strings as terms. In the invention, when the term marking is carried out, a prejudgment is made by using the term prefix table which is pre-established and cached in the memory, so that the searching times of a term base are greatly reduced.

The invention belongs to the technical field of three-dimensional point cloud data processing and three-dimensional scene reconstruction, A multi-channel three-dimensional color point cloud registration method based on geometry comprises the following steps: (1) acquiring three-dimensional color point cloud data, (2) extracting point cloud data, (3) performing point cloud shape classification, (4)performing point data registration, (5) linear point data registration, (6) performing planar point data registration, (7) performing point cloud data registration, and (8) performing three-dimensional color point cloud data registration. As that covariance matrix is constructed, the geometrical features of three-dimensional point cloud data are calculated accurately, extracting point points frompoint cloud data, Linear points and planar points are three kinds of feature point sets, and the three kinds of feature point sets are used to complete the registration of three-dimensional color point cloud, thus effectively solving the problem that the registration time is too long due to the large amount of data of three-dimensional color point cloud, and greatly improving the registration efficiency and accuracy of three-dimensional color point cloud.

The invention discloses a method and a system for searching and locating resources. The method and the system are applicable to cloud computing platforms. The method includes enabling metadata servers to store Hash values of file node information in Hash tables fsnode, and storing Hash values of file name space information in Hash tables fsedage; enabling clients to transmit paths and file names of be-searched-and-located target files to the metadata servers; enabling the metadata servers to use home directories of the target files as key values, and retrieving the Hash tables fsedage to acquire corresponding information edage; utilizing the information edage, name lengths of the target files and name information of the target files as key values, retrieving the Hash tables fsedage to acquire corresponding file identification of the corresponding target files and transmitting the file identification to the clients. According to the technical scheme, the method and the system have the advantages that all path information can be exchanged among the clients and the metadata servers at one step, accordingly, the retrieving frequencies and the exchange frequencies can be reduced; metadata information is cached by the aid of the clients, so that the exchange frequencies among the clients and the metadata servers can be reduced.

The present invention provides an audio/video processing method and device. The present invention relates to an audio/video processing method and device. The method comprises the following steps: receiving remote audio/video data, obtaining video data to be decoded from the remote audio/video data; obtaining a coding table from the video data to be decoded; segmenting the coding table to sub code blocks with a pre-determined quantity according to a retrieval frequency; obtaining a current block value based on the context; dynamically generating the data length value of the video data to be decoded according to the current block value and the sub code blocks; and performing CAVLC decoding of the video data to be decoded according to the data length value to obtain the remote video data in a YUV formula after decoding. The audio/video processing method and device can reduce the resource consumption in the audio/video coding and decoding process and improve the efficiency of the audio/video coding and decoding.

The invention belongs to the infrared-type general remote controller technology field, and relates to a general remote controller code arrangement method. During the process of the method, a mobile phone software or a flat computer software with a remote controller code database employs an audio frequency line to connect a general remote controller through an audio frequency port and code arrangement or code research of the general remote controller is carried out. In the method, a mobile phone or a flat computer is employed to cooperate with the general remote controller for the first time, the method employing a mobile phone software or a flat computer software to carry out code arrangement or code research of the general remote controller is provided, a user does not need to check a specification, thus remote controller code visualization and operation real-time are achieved, the code search scope is reduced, the code search time is shortened greatly, the code search success rate is raised greatly, and therefore the general remote control is practical.

The invention discloses an electricity information data retrieving method and device, and relates to the field of power. The electricity information data retrieving method and device are used for improving the speed of electricity information data retrieving. The electricity information data retrieving method comprises the steps of using multiple electricity information data to construct an electricity information database with large capacity; conducting statistics on accumulated retrieving times of the electricity information data, and utilizing the electricity information data of which accumulated retrieving times meet an accumulated retrieving threshold value to construct a cache; searching the cache for the electricity information data which corresponds to the retrieving request according to a retrieving request; searching the electricity information database with large capacity for the electricity information data which corresponds to the retrieving request according to the retrieving request if the electricity information data which corresponds to the retrieving request is not searched in the cache. The electricity information data retrieving device comprises the electricity information data retrieving method. The electricity information data retrieving method is used for improving the speed of electricity information data retrieving.

The invention provides a natural resource base map construction method based on data fusion. Based on territorial three-tone data and natural resource professional survey data, after data preprocessing and joint intersection, fused data considering graphs and attributes of the territorial three-tone data and the natural resource professional survey data is obtained. Aiming at small image spots of which the area is less than a first threshold value and the area is between the first threshold value and a second threshold value in the intersected data, searching an optimal to-be-fused image spot based on a list and rule method combination, screening out candidate objects of the to-be-fused image spots by taking consistent identification codes as a first screening rule, putting the candidate objects into a list, and according to a second screening rule, selecting the candidate objects of the to-be-fused image spots from the candidate objects of the to-be-fused image spots. And screening the candidate objects step by step according to the priority of the judgment criterion to realize rapid and automatic data fusion. According to the fusion method, the optimal to-be-fused pattern spots can be automatically and efficiently searched, and the broken and small pattern spots are eliminated through fusion, so that a natural resource base map meeting natural resource investigation and monitoring requirements is obtained.

The invention relates to a PTS peak-to-average ratio suppression method based on space optimization, belongs to the technical field of wireless communication power amplifier efficiency optimization, and solves the problem that peak-to-average ratio suppression and complexity reduction cannot be considered at the same time in the prior art. The method comprises the following steps: performing frequency domain conversion on an input M-QAM signal to generate an OFDM frequency domain signal, and performing signal segmentation on the OFDM frequency domain signal; sequentially inputting each divided OFDM frequency domain sub-signal into a preset frequency domain scrambling model to obtain a plurality of PTS multiplicative scrambled frequency domain discrete signals corresponding to the OFDM frequency domain signal; respectively inputting the frequency domain discrete signals after each PTS multiplicative scrambling into a preset Spacing evaluation model to obtain corresponding signal dispersion estimated values, arranging the estimated values from small to large, and identifying the frequency domain discrete signals corresponding to the first m estimated values; and respectively carrying out time domain PAPR evaluation on each frequency domain discrete signal obtained by identification, and obtaining a time domain transmission signal after final peak-to-average power ratio suppression based on the frequency domain discrete signal corresponding to the minimum evaluation result.

The invention discloses a method for observing and overhauling the interior of equipment. The method comprises the following steps: (1) determining the position of a damaged part; (2) performing accurate flaw detection by an endoscope; and (3) scheme decision: performing information acquisition on the damage condition in the equipment in the mode, and meanwhile, retaining the walking path of the endoscope.