Author:
Lisichkin V G,Ashikhina L A,Bolshakova L S,Izvekova E V,Kuzina A V,Ladnova O L,Lisichkina N V,Merkulova E G
Abstract
Abstract
The article is devoted to the research of innovations in the field of improvement of resonance methods of soil moisture control with the help of capacitive sensors. Soil moisture is one of the most important indicators of the hydrological state of the land, the variability of which is determined by both the soil structure and the impact of atmospheric processes. Study of the state and spatial and temporal dynamics of soil moisture is necessary not only for solving local applied problems of agrotechnical character, but also for conducting fundamental research in the field of ecology, hydrology, meteorology, climatology, including the forecasting of global climate change. In order to increase the accuracy of resonance control devices, it is proposed to use multiparameter methods of measurement and linear frequency modulation of the signal that excites the measuring transducer. Analytical studies of the processes associated with the appearance of additional measurement errors arising from the influence of active losses in the controlled soil and the “drift” of resonance frequency have been carried out, and ways of reducing these errors have been identified.