NEW HYBRID ANALOG DATA ACQUISITION SYSTEM FOR ATMOSPHERIC TURBULENCE (HYSAT)

Abstract

A new hybrid analog data acquisition system (HYSAT) for the purpose of data processing of vertical turbulent transports and related quantities in the atmospheric boundary layer is proposed. This system is a combination of an analog and a digital computing parts. The analog part is used in pre-processing to calculate the mean values and standard deviations of physical entities, and cross correlations and covariances of them in analog form. The digital part is to sample the pre-processed data and to integrate for the whole sampling duration in digital form. However this part is not completed and the calculation to obtain the final results has been made manually by a desk top electronic calculator. A final test of the system shows that the results are as satisfactory as expected and can be used in field experiments.