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  • Methods for processing navigation information in order to improve accuracy

    The article is devoted to the research of methods of processing of navigation information. To collect experimental navigation information, a system based on the Real time locating system was used, which includes 9 receivers and one label. Label positioning takes place by measuring the distance from the label to the receivers (at least 3). Measurements were made at 9 points on the test polygon to determine the point with the highest standard deviation (STD). However, there is no relationship between the position of the point and the STD. As a result, data sets of navigational information were received, which are subject to further processing. The standard deviation of the navigation system is calculated. The methods of linear filtration are studied: a median filter, a moving average filter and a Wiener filter. Their effectiveness was assessed from the point of view of the reduction of STD. The algorithms of each of the filters are presented. Shown are graphs showing the smoothing properties of the filters. The general properties of the pros and cons of each filter are given. The STD is calculated after applying different filters. Conclusions are given about the most effective filter from the point of view of the STD. It turned out to be a moving average filter. However, the decrease in STD was not significant. Conclusions are drawn about the need to integrate navigation information from various sources.

    Keywords: navigation, positioning, data filter, linear filter, moving average filter, median filter, Wiener filter, mobile objects control, navigation information processing, standard deviation

  • Opto-electronic device of forming a flat multi-color light raster large size

    Flat multicolor light rasters larger sizes can be used for orientation of the aircraft relative to the runway. In the case of the use of such light vehicles in the route and glide-path system (KGF) landing aircraft to increased demands. It should be reliable, efficient, weatherproof and safe. The safety of the pilot is of importance both from the point of view of security applications of KGF as avionics, and increasing psychological and emotional stress, and richness of information flows. As well as the reliability of the system is a guarantee of minimization of emergency situations, leading to the work of the pilot in a stressful condition when a person has reduced functional performance (reduced attention, drops his concentration), speed of decision making and actions can be reduced and, accordingly, affect the results of its activities. Despite the high level of automation of process of landing of an aircraft on the runway, visual perception a pilot environment remains a key in taking a final decision. A particularly acute problem when landing on small platforms, including on the platforms of shipborne. The sooner the pilot will visually assess the environment, the more time it will have for decision-making, especially in conditions of poor visibility and the presence of radio interference.

    Keywords: the light raster, semiconductor lasers, galvanoscanner, line scan, frame scan, sector, raster geometry raster, route and glide-path system