Patent ID: 6710737
Filing Date: 2004-03-23
Classification: G01S

Abstract:
A method comprising:providing a radar target generator, said radar target generator having a gain that is set to step-down gain for succeeding pulses processed by said radar target generator; providing a transmit antenna, an output of said radar target generator being operably coupled to said transmit antenna; providing a receive antenna, wherein said transmit and receive antennas are oriented towards each other and said antennas are separated by a predetermined distance; providing a signal generator; providing a signal analyzer; providing a 4-port hybrid junction, an output of said receive antenna being operably coupled as a first input to said 4-port hybrid junction and an output of said signal generator being operably coupled as a second input to said 4-port hybrid junction, a first output of said 4-port hybrid junction being operably coupled to an input of said radar target generator and a second output of said 4-pot hybrid being operably coupled to said signal analyzer, wherein said signal generator provides a signal that is regenerated by said radar target generator, resulting in a pulse train of recirculating pulses provided to said signal analyzer, and wherein said pulses of said recirculating pulse train are used to determine a transmission characteristic of said radar target generator, said transmit and receive antennas, said couplings between said radar target generator and said antennas and said predetermined distance between said antennas.