Dual polarization calibration receiver used for airborne SAR
In order to overcome a technical problem that an existing ground calibration receiver is greatly influenced by environment, the utility model provides a dual polarization calibration receiver used for an airborne SAR, comprising an antenna unit, a first reception channel unit, a second reception cha...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
17.07.2013
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Subjects | |
Online Access | Get full text |
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Summary: | In order to overcome a technical problem that an existing ground calibration receiver is greatly influenced by environment, the utility model provides a dual polarization calibration receiver used for an airborne SAR, comprising an antenna unit, a first reception channel unit, a second reception channel unit, a first AD sampling unit, a second AD sampling unit, a memory cell, a reference source unit, a microcomputer control unit, a temperature sensing correction unit, a self calibration unit, a direction control unit, and a time synchronization unit. Beneficial technical effects of the dual polarization calibration receiver are that reception channel gain self calibration is realized by using technologies of high-precision gain closed-loop control, standard channel gain comparison, gain error digital high-precision compensation, temperature correction function automatic compensation, etc. The dual polarization calibration receiver can complete high fidelity reception records of airborne SAR signals, and reali |
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Bibliography: | Application Number: CN2013279566U |