FORMS OF PLUTONIUM EXISTENCE AND MIGRATION IN SOILS

The investigation objects are the plutonium, soils, grasses and hot particles. The aim is to study the special geochemical features of the plutonium behaviour in the soils of the Russia's steppe and partially-wooded steppe zones in the regions of arranging enterprises of the nuclear-fuel cycle. The regularities of the plutonium behaviour in the different type soils have been determined; the geochemical barriers of accumulating plutonium within the limits of the soil profile have been revealed. The forms of the plutonium existence in the soils depending on the sources of its reception have been determined; the hypothesis about mechanisms of its transfer in the soils has been stated. The radiochemical methods for detection of the plutonium in the soil-vegetable cover have been developed. The investigation results on the existence forms and behaviour regularities of plutonium in the land ecosystems can be used at development of the measures on the rehabilitation of the contaminated territories. The radiochemical methods for detection of the plutonium in the environment samples have been introduced. The methods have been introduced at the scientific organizations occupying with the solution of the ecological problemsAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

ESTIMATION PILOTING ERRORS STATISTICS AND PROBABILITY OF SATELLITE NAVIGATION SYSTEM FAILURE

A new approach to the problem of co-processing of data about the aircraft position with the help of satellite navigation systems and secondary surveillance radar system is been developed. The purpose of the task is to obtain estimates of mistakes distribution for control systems and piloting errors. Possibility of a statistical relationship between piloting errors and mistakes of satellite navigation system is taken into account

Об оценках статистики ошибок пилотирования и вероятности сбоя спутниковой навигационной системы

A new approach to the problem of co-processing of data about the aircraft position with the help of satellite navigation systems and secondary surveillance radar system is been developed. The purpose of the task is to obtain estimates of mistakes distribution for control systems and piloting errors. Possibility of a statistical relationship between piloting errors and mistakes of satellite navigation system is taken into account.Развивается новый подход к задаче совместной обработки данных о положении воздушного судна с помощью спутниковой навигационной системы и системы вторичных обзорных радиолокаторов. Цель задачи - получение оценок для распределений собственных ошибок систем контроля и ошибок пилотирования. Учитывается возможная статистическая зависимость между ошибками пилотирования и ошибками данных спутниковой навигационной системы