UAV-born Narrowband Radar Complex for Direction Finding of Radio Sources

We present the idea of creating an on-board radio direction finder for winged unmanned aerial vehicles with a wide range of unambiguous measurements and high accuracy of direction finding of radio sources. It is suggested to obtain high quality characteristics by combining signal processing in an amplitude two-antenna direction finder with wide patterns, a two-antenna direction finder with narrow patterns, and a two-antenna phase finder. For the optimal combination of different systems, which have their advantages and disadvantages, a statistical synthesis of signal processing algorithms in a six-antenna direction finder with different restrictions on input paths is performed. The analytical expressions for the marginal errors of the on-board system are obtained and their simulation is performed for different output parameters.