Model of the Signal Scattered by a Cruise Missile at the Output of the Antenna Array of an VHF Band Radar

The article describes computer model of the signal echoed from a cruise missile (CM) and observed at the out- put of antenna array (AA) of an VHF band radar. The model is based on the magnetic field integral equation (MFIE), which allows obtaining the secondary radiation (SR) characteristics of perfectly conducting objects of resonant dimensions. The created electrodynamic model allows for studying the signals scattered by moving air assets given specific parameters of their trajectories, as well as particular parameters of their radar probing. The model also accounts for particular configurations of antenna systems employed by the VHF band radars. The article features simulated signals as they would be scattered from the 3M-14 “Caliber” and Kh-101 cruise missiles while moving along a given trajectory. A brief study of an impact of the signal spectrum sampling interval on the simula- tion accuracy resulted in the optimal selection of this sampling interval. The optimization was aimed at ensuring the correct energy representation of the signal spectra scattered by cruise missiles while providing for minimal compu- tational burden. The article presents the energy plots of signals scattered by the attack assets presented by the 3M-14 “Caliber” and Kh-101 cruise missiles that would be flying along specific tracks. This model is of particular practical interest to designers of modern VHF band radar equipment, and it can be used to substantiate the parame- ters of antenna systems, of radar transmitters&receivers, as well as of radar information processing algorithms. The model will also be useful to specialists concerned with figuring out ways of increasing the effectiveness of radar surveillance of the CMs using existing radars.