Investigation of UWB RF signal technology for solving indoor positioning problem

The article considers the process of developing a local positioning system using an ultra-wideband radio signal system and its integration with a strapdown inertial navigation system (SINS). A system based on Ultra-Wide Band (UWB) technology is used as a radio navigation system. An overview of the developed experimental integrated navigation system model is presented. Algorithms for calculating the position using the propagation time of the radio signal are used to obtain a navigation solution. An analysis of the accuracy of Single-Sided Two-Way Ranging and Double-Sided Two-Way Ranging algorithms using a UWB radio module is presented. The modeling errors of the inertial navigation system were performed. The maximum permissible parameters of the sensitive element errors were obtained for integration with the radio navigation system. The scheme of integration of the navigation solution of the UWB and SINS systems is determined.

Synthesis of a basic satellite radio navigation system

На основе анализа особенностей навигационно-временных определений и методологических основ проектирования в системах высокоточного позиционирования проведена генерация вариантов спутниковой радионавигационной системы, исходным шагом в которой является синтез её базового варианта. Рассмотрены наиболее эффективные процедуры разрешения неоднозначности фазовых измерений, основанных на избыточности фазовых измерений, а также процедуры, заключающиеся в целочисленной максимизации функции неоднозначности, выбранной из характера периодичности сигналов навигационного космического аппарата. Сформулирован критерий точности позиционирования. Based on the analysis of the features of navigation-time definitions and methodological foundations of design in high-precision positioning systems, the generation of options for a satellite radio navigation system was carried out, the initial step in which is the synthesis of its basic version. The most effective procedures for resolving the ambiguity of phase measurements based on the redundancy of phase measurements, as well as procedures involving the integer maximization of the ambiguity function, selected from the nature of the periodicity of the signals of the navigation spacecraft, are considered. A criterion for positioning accuracy is formulated.

New Aspects of Progress in the Modernization of the Maritime Radio Direction Finders (RDF)

This paper as an author contribution introduces the implementation of the new aspects in the modernization of the ships Radio Direction Finders (RDF) and their modern principles and applications for shipborne and coastal navigation surveillance systems. The origin RDF receivers with the antenna installed onboard ships or aircraft were designed to identify radio sources that provide bearing the Direction Finding (DF) signals. The radio DF system or sometimes simply known as the DF technique is de facto a basic principle of measuring the direction of signals for determination of the ship's position. The position of a particular ship in coastal navigation can be obtained by two or more measurements of certain radio sources received from different unspecified locations of transmitters on the coast. In the past, the RDF devices were widely used as a radio navigation system for aircraft, vehicles, and ships in particular. However, the newly developed RDF devices can be used today as an alternative to the Radio – Automatic Identification System (R-AIS), Satellite – Automatic Identification System (S-AIS), Long Range Identification and Tracking (LRIT), radars, GNSS receivers, and another current tracking and positioning systems of ships. The development of a modern shipborne RDF for new positioning and surveillance applications, such as Search and Rescue (SAR), Man over board (MOB), ships navigation and collision avoidance, offshore applications, detection of research buoys and for costal vessels traffic control and management is described in this paper.

Integration of Mobile Network and Navigation Topologies for Mobile Object Management

An approach is developed for sharing the resource of the mobile object communication system and the local radio navigation system based on the integration of their topologies according to the criterion of electromagnetic availability of mobile stations simultaneously to several base stations of the network. This approach can be used in the design of navigation and communication systems and navigation equipment of the consumer.