MICROWAVE HOLOGRAPHIC MEASURING METHOD AND APPARATUS

摘要

A microwave holographic measuring method is disclosed. A first electrical signal S of microwave frequency is provided. A first part S1 of the first signal S is directed to a first antenna (101). Predetermined changes of phase and amplitude are applied to a second part S2 of the first signal S to produce a second electrical signal S4 which is coherent with the first part S1 of the first signal S. Microwave radiation is detected at a plurality of locations by means of a second antenna (107) to generate a third electrical signal S5 at each location. The second S4 and third S5 electrical signals are combined to produce a fourth electrical signal.