Application of Rao-Cramer boundary for estimation of signal parameters in technical information protection systems for detection of spy unmanned aerial vehicles
A. V. Volovyk, A. V. Naumenko · Modern information security · 2021
The paper considers the problem of detecting the position of unmanned aerial vehicles, which are equipped with appropriate equipment for unauthorized receipt of confidential information at the object of information activities. The Rao-Cramer boundary was used to determine the bearing angle of spy unmanned aerial vehicles using annular, arcuate and similar antenna arrays for radio direction finding using the maximum likelihood method and Music. Rao-Cramer limits are calculated for the location of signals in azimuth and for the signal-to-noise ratio. The dependence of the standard deviation for azimuth and angular direction finding in the presence of noise is obtained.