Gradient descent course control in a multiposition angle of arrival airborne system

At present, special attention is paid to the development of multi-position guidance systems based on passive airborne radar stations using manned and unmanned aerial vehicles. When constructing such systems, one of the urgent tasks is the trajectory control of the observation of mobile positions, ensuring the formation of a certain geometry of the spatial position of these positions in order to minimize the errors in estimating the coordinates of the radio emission source. Currently, gradient methods of trajectory control of two-position mobile systems are known. However, they have a drawback associated with the lack of consideration of mutual correlations of measurement errors of the location parameters of radio emission sources. One of the ways to overcome this drawback is to change the type of the minimized objective function, ensuring consideration of the correlation relationship between the errors in determining the rectangular coordinates of the radio emission source. The obtained results indicate an increase in the efficiency of the multi-position system based on the proposed algorithm of gradient control of position observation. The algorithm allows calculating the values of the required course of the information position at each step of control, ensuring a regular change in the trajectory of the information position and improving the conditions for observing radio emission sources. The conditions of operation of a two-position angle-measuring system based on passive airborne radar stations using manned and unmanned aerial vehicles are described. The features of the implementation of the known gradient method for forming the control of the trajectory of movement of mobile positions are considered, and a variant of its modification is proposed taking into account the mutual correlations of the errors in measuring the coordinates of the radio emission source. Description of the gradient control algorithm in a multi-position airborne goniometric system along the course, ensuring an increase in the accuracy of determining the location of the RES while minimizing the area of the ellipse of errors in determining the location.