초록 ▼

Air-to-ground radar (2) is stabilized by comparing the power of the returning echo occurring during an initial period after the transmission of each pulse with that occurring during a following period after the transmission of each pulse, and using the result of this comparison to control an elevati

Air-to-ground radar (2) is stabilized by comparing the power of the returning echo occurring during an initial period after the transmission of each pulse with that occurring during a following period after the transmission of each pulse, and using the result of this comparison to control an elevation controller (13) of the radar (2). Means (7, 8) provide a first power signal representative of the power of the returning echo occurring during an initial period after the transmission of each pulse, means (7, 9, 10) provide a second power signal representative of the power of the returning echo occurring during a following period after the transmission of each pulse, and a comparator (12) compares the magnitude of the first and second power signals and outputs a control signal causing the elevation controller (13) to raise or lower the elevation at which output pulses are projected.

대표청구항 ▼

A method of stabilizing the elevation of an air-to-ground radar mounted on an airborne platform, comprising the steps of: transmitting a single radar scan from said air-to-ground radar; first monitoring, during an initial period after said transmitting of said radar scan, a power of a first returnin

A method of stabilizing the elevation of an air-to-ground radar mounted on an airborne platform, comprising the steps of: transmitting a single radar scan from said air-to-ground radar; first monitoring, during an initial period after said transmitting of said radar scan, a power of a first returning radar echo from said single radar scan; second monitoring, during a following period after said initial period, a power of a later returning radar echo from said single radar scan; comparating said power of said first returning radar echo with said power of said later returning radar echo; and controlling the elevation of said air-to-ground radar with respect to said platform on which it is mounted in accordance with the result of said comparison between said powers of said first and later returning radar echoes from said single radar scan in a way to stabilize the angle of incidence of the radar scan on the ground.