Device of tracking processing for indicator channel of short-range radio navigation systems

Features of the indicator channel of the short-range radio navigation systems (for example, the RSBN-4 system) are considered. It was revealed that a significant shortcoming of the indicator channel of the short-range radio navigation is the low accuracy of determining the navigation parameters (azimuth and inclined range of the aircraft) in comparison with on-board equipment. It is shown that one of the possible ways to increase the accuracy of measuring the coordinates of the aircraft in the indicator channel is the use of trajectory processing of radionavigation information whose purpose is to estimate the parameters of the motion of an aircraft in the short-range radio navigation observation zone on the basis of measurements of its instant position for determining the trajectory in the measurement interval and predicting his subsequent movement. The structure of the device for trajectory processing of the indicator channel RSBN can to a great extent repeat the structures of similar devices used in the processing of radar information, taking into account the features of the operation of the indicator channel. The structure of trajectory processing is developed and its features are noted on the example of the system RSBN-4. The performed mathematical modeling confirmed the possibility of a significant increase in the accuracy of the measurement of the coordinates of the aircraft in comparison with the existing indicator channel RSBN-4N.