988results about How to "Guaranteed calculation accuracy" patented technology

Disclosed in the present invention a method for calculating channel quality indication information and a terminal thereof. The method involves performing channel measurement by terminal according to received cell state information-reference signal (CSI-RS) or cell reference signal (CRS), determining a channel state information (CSI) reference resource, and determining condition of calculating channel quality indication (CQI), then calculating CQI value corresponding to the CSI reference resource by terminal according to the determined condition and the measured result. The invention makes a reasonable set of the condition of calculating CQI, and ensures performance and effectiveness of the system link self-adaptation.

The invention relates to the technology of digital signal processing, and provides a self-adaptive high-precision fast spectral analysis method which solves the problem that an existing spectral analysis method is large in error and poor in precision. According to the technical scheme, the self-adaptive high-precision fast spectral analysis method comprises the steps of firstly collecting analog signals, carrying out preprocessing of smoothing, and then carrying out analog-digital conversion to obtain sampling data; selecting 28 data to carry out FFT processing to obtain preliminary signal frequency spectrum information, carrying out peak searching, and then carrying out spectral line aliasing recognition on the preliminary signal frequency spectrum information; if aliasing does not exist, carrying out frequency spectrum correction processing on the preliminary signal frequency spectrum information to obtain the frequency, the amplitude and the initial phase information of the signals; if the aliasing exists, carrying out repeated analysis band-pass filtering thinning processing on the preliminary signal frequency spectrum information, and then carrying out the frequency spectrum correction processing to obtain the frequency, the amplitude and the preliminary phase information of the signals respectively. The self-adaptive high-precision fast spectral analysis method has the advantages that under the premise that calculation precision is ensured, the calculation amount is reduced to a large extent, and the self-adaptive high-precision fast spectral analysis method is suitable for spectral analysis.

The invention discloses a multi-GPU molecular dynamics simulation method for structural material radiation damage. The method comprises the following steps: initializing; dynamically dividing grids for each node; performing inter-node communication; establishing a sorting cellular list on GPU; updating time step; finding the corresponding relationship between particle and grid number according to the coordinate of the particle; forecasting the displacement, speed and accelerated speed of the particle; calculating the stress of each particle; utilizing the stress to rectify the displacement, speed and accelerated speed of the particle; ensuring the constant temperature of the system according to the ensemble correcting speed; utilizing a periodic boundary condition to correct the position of the particle; storing a current calculation result; and iteratively executing the above steps till reaching preset step number. The method can be utilized to high-efficiently and conveniently simulate the material radiation damage process on larger spatial and temporal scale and to explain the long-time evolution law of the radiation damage at micro-scale.

The invention belongs to the field of digital image processing technology and relates to an image data information collection at a traffic accident scene and a processing method thereof. A fixed structure is used to adjust the angles of four laser range finders, so as to form a quadrangle laser target around the traffic accident scene. A camera is used to take accident scene photographs with the laser target and to record the distance, shooting angles and other geometric scene information of the laser target relative to the laser range finder. Based on the method of simplified direct linear transformation, the laser target of the image is regarded as a calibration object to establish the transformation relationship between an image space and a object space; based on the transformation relationship established and the allowable error threshold values, the image transformation on all pixels of the image can be made to get an orthographic projection image of the traffic accident scene. Finally, based on the conversion relationship between the pixel length and the actual geometrical length, the image of the traffic accident scene with the same size of the traffic accident scene can be obtained. The invention is mainly used in major traffic accidents and can meet the application requirements of the rapid investigation at the traffic accident scene.