TWO-SCALE MODIFICATION OF CONICAL SCANNING DIRECTION FINDING METHOD

The paper considers a generalized case of conical scanning method, in which the cross‑section of the antenna beam has an elliptical shape. Such feature of the antenna beam shape leads to the occurrence of additional information contained in the received signal. It is shown that by utilizing this information it is possible to form an estimate of the direction to object at large off‑center angles. A modification of the conical scanning method is proposed that combines the estimates of object’s angular position, obtained via standard computational procedure (main scale) and additional procedure for angle estimation based on the additional direction‑finding information contained in the received radar signal envelope (additional scale). The technical result of the introduced two‑scale modification of the conical scanning method consists in a significant expansion of the operational area of direction finding compared to the original method.