SYNTHETIC APERTURE RADAR

PURPOSE:To observe plural different objective materials at the same time with a single synthetic aperture radar by radiating plural pulse radio waves of different frequency from an antenna in sequence or irregularly and repeatedly. CONSTITUTION:A controller 17 is controlled to send pulse transmit si...

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Bibliographic Details
Main Authors ITOU YASUYUKI, HISADA YASUMASA, MORIMOTO SHIGERU
Format Patent
LanguageEnglish
Published 04.09.1985
Edition4
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Summary:PURPOSE:To observe plural different objective materials at the same time with a single synthetic aperture radar by radiating plural pulse radio waves of different frequency from an antenna in sequence or irregularly and repeatedly. CONSTITUTION:A controller 17 is controlled to send pulse transmit signals of, for example, three different frequencies F1, F2, and F3 out of a transmitter, pulse by pulse, in order repeatedly. Simultaneously, pulse radio waves of frequencies F1, F2, and F3 are radiated repeatedly at time points T1, T2, T3... in the flying direction L of an airframe from an antenna 12 having element arrays switched by an antenna switch 16 controlled by the controller 17, their reflected waves are received by a receiver 13 through the antenna 12 and recorded on a recorder 14, and the recorded data are processed to obtain videos of three different kinds of objective material on the ground.
Bibliography:Application Number: JP19840025173