Abstract <p>The paper deals with the complex solution of the problem of stochastic estimation of spatial orientation parameters of mast antennas placed on mobile complexes of radio detection and guidance, and the very antenna carrier objects. The algorithm is proposed for estimating the spatial orientation parameters of the mast antenna and the mobile object-carrier based on the use of autonomous measuring instruments (inertial and non-inertial) with the most general assumptions about the nature of interference sensitive elements of the measuring complex. It is established that the algorithm invariant to the nature of the mast and object motion provides stability and accuracy of estimation required for mobile radio detection and guidance complexes of different base type in the absence of satellite measurements. </p>