METHOD OF DETERMINING PARAMETERS OF MOVEMENT AND TRAJECTORIES OF AERIAL OBJECTS DURING SEMI-ACTIVE BISTATIC RADAR Russian patent published in 2019 - IPC G01S13/58 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used in systems of three-coordinate semi-active radar using, as illumination signals, radiations of radioelectronic systems for various purposes, in particular digital television broadcasting signals of DVB-T2 standard, to determine coordinates, speeds and trajectories of aerial objects (AO), including low-altitude ones, moving in space. Said result is achieved by using measured values of angular coordinates of aerial object using measured values of angular coordinates β_k and ε_k AO at points A_k trajectory, where k is trajectory point number, as well as time delays values τ_k, using the measured absolute Doppler frequency shift ƒ_∂k and the value of spatial heading angles, calculating the AO speed modules at points A_k trajectory as

where λ is the wavelength of the television center (TC) emission, where qk0 are the spatial heading angles of the AO relative to the receiving station of the bistatic radar system, qkb are spatial course angles relative to TC in bistatic radar system, after which trajectory of AO motion in space is constructed using measured values of its angular coordinates, delays reflected from it of illumination signals and Doppler frequency shifts on propagation paths, as well as calculated values of inclined distances, spatial heading angles and speeds of object movement.

EFFECT: predicting the trajectory of the AO.

1 cl, 2 dwg