40 results about "Method of averaging" patented technology

An estimating method for maximum channel delay and cyclic prefix (CP) averaging method in orthogonal frequency division multiplexing (OFDM) receiver are described. Specifically, the estimating method performs the estimation of the maximum channel delay by adding the CP and the main OFDM signal for increasing the signal-to-noise ratio (SNR) and for reducing the inter-carrier interference (ICI). The CP averaging method is used to acquire a portion of the CP by using the maximum channel delay so as to increase the performance of the OFDM receiver.

The invention provides a reservoir stage power generation scheduling rule extraction method. Stage influence factors are screened based on grey relational analysis, a multivariate nonlinear regressionmodel, a support vector machine model and a BP artificial neural network model are adopted to fit and then obtain a stage reservoir power generation scheduling function, and a Bayesian model averaging method is applied to perform multi-model weighted averaging to obtain a final stage reservoir power generation scheduling function. According to the invention, GRA is introduced into the reservoir scheduling rule simulation for influence factor screening, so redundant attributes are removed, the model complexity is reduced, and the model simulation efficiency is improved; GRA and EVA are combined to realize the stage extraction of reservoir power generation rules, so the inconsistency of the correlation between decision variables and the influence factors for different periods of reservoir scheduling is balanced, the uncertainty of a single model which may be caused by the model structure is balanced, and the model simulation precision is improved; the requirement for reservoir power generation scheduling rule extraction is met, and the benefits of determinacy optimization scheduling in the power generation process are well inherited.

The invention relates to a correction method for a radar receiving channel array. According to the method, the amplitudes and phase data of the receiving channel array at multiple angles are firstly recorded, and then amplitude and phase correction is carried out. The amplitude correction value is obtained through the method of averaging amplitude measurement values of the multiple angles. According to the calculation of the phase correction value, a phase reference channel is selected firstly, the theoretical phase deviation value of the reference channel is subtracted from the phase measurement value of each angle, bad values are removed, the residual data are averaged, then the phase deviation value is obtained, and the phase correction value is further obtained.

The invention discloses a control system for adding and discharging water to a laboratory water tank, which comprises a water pressure measuring instrument, a single-chip microcomputer control system, a water filling switch and a water discharge switch, and the single-chip microcomputer control system is respectively connected with the water pressure measuring instrument, the water filling switch and the water discharging switch; At the same time, the data obtained by the water pressure measuring instrument is fed back to the single-chip control system, and the single-chip control system controls the water supply switch and the water discharge switch to add water or discharge water to the water tank through calculation. The control system for adding water and releasing water to laboratory water tanks of the present invention has simple structure and low cost, and can be applied to test water tanks of various colleges and universities. The method of calculating the average value of multiple measurements can meet the test requirements, and the accuracy of the water level is also greatly improved compared with naked eye observation.