S.V. Spitsyn – Engineer of the 1st category, 

OKB «Spektr» (Ryazan, branch of JSC «SRC «Progress»);

Post-graduate Student,

Department «CAD systems of Computing Facilities»,

Ryazan State Radio Engineering University named after V.F. Utkin

Е-mail: spitsyn62@gmail.com

A.V. Tovpeko – Main Designer,

OKB «Spektr» (Ryazan, branch of JSC «SRC «Progress») Е-mail: tovpeko.av@samspace.ru

The algorithm for targeting calculation during rocket launches (field tests) is considered. The aim is to find a generalized algorithm for targeting calculation during field tests of complex products of rocket and space technology, which includes stages of the mathematical processing of the initial data, coordinates transformation in various coordinate systems, the radio lines energy calculations, and to build a generalized subject model including preparation of the initial data required for targeting calculations and calculation of radio visibility zones and reliable reception intervals. The target designation (targeting) of the measuring tool is an array of records of the form «time - azimuth - elevation - range» for each point of the flight path of the product. The initial input data for the calculation are: the trajectory model in the starting coordinate system, the azimuth of firing, the geodetic coordinates of the starting position, the geodetic coordinates of the measuring tool, the parameters of the earth ellipsoid used to convert the geodetic coordinates into rectangular ones.

In the process of calculation, the following transformations are performed: the transfer of each point of the trajectory to the geocentric coordinate system (GCS) from the start - using the firing azimuth and the coordinates of the joint venture, the transition from the GCS to the topocentric measuring coordinate system (GIS), the transition from rectangular coordinates to the GIS to azimuth, elevation and range - i.e. full targeting vector. On the basis of the proposed algorithm and the corresponding mathematical transformations of the trajectory parameters and the parameters of the radio lines at its individual stages, a unified generalized information model of the subject area for the preparation of the initial data for calculating the central control unit and the confident reception intervals (ER diagram in Baker's notation) is constructed. Separate entities of the model illustrate the board description, product types, characteristics of terrestrial antennas, the characteristics of various types of recording equipment, and the characteristics of a measuring point. The proposed model, in conjunction with the corresponding algorithm, is able to fully provide an accurate and operational calculation of the measuring instrument for measuring instruments during field tests.

1. Spitsyn S.V., Tovpeko A.V. Aktualnye problemy rascheta tseleukazanii izmeritelnym sredstvam pri obespechenii raketnykh puskov. Sb. trudov. «Mezhdunar. nauchno-tekhnich. forum STNO-2019». Ryazan. 2019. T. 4. S. 188−193. (in Russian)
2. Tovpeko A.V. Arkhitektura i printsip deistviya sistemy upravleniya izmeritelnymi sredstvami pri obespechenii raketnykh puskov. Vestnik Ryazanskogo gosudarstvennogo radiotekhnicheskogo universiteta. 2015. № 51. S. 79−89. (in Russian)
3. Balashov S.Yu., Spitsyn S.V. Osobennosti obrabotki, analiza i predstavleniya traektornykh izmerenii pri provedenii puskov izdelii RKT. Vestnik Ryazanskogo gosudarstvennogo radiotekhnicheskogo universiteta. 2019. № 69. S. 175−184. DOI: 10.21667/1995-4565-201969-175-184. (in Russian)
4. Spitsyn S.V., Tovpeko A.V., Tikhomirov S.A. Algoritm obrabotki traektornykh izmerenii pri provedenii raketnykh puskov. Vestnik Ryazanskogo gosudarstvennogo radiotekhnicheskogo universiteta. 2019. № 70. (in Russian)
5. Yatsenkov V.S. Osnovy sputnikovoi navigatsii. M.: Goryachaya liniya. 2005. (in Russian)