The radio performance of a microwave antenna is very dependent on the geometric accuracy of the surface of the antenna. A photogrammetric measurement method of space deployable microwave antenna is presented. A photo grammetric system of four camera stations was established. The antenna was photographed with four CCD cameras from different directions. It improves the measurement accuracy effectively and avoids the influences of vibration because the system is 3-D on-line vision measurement system. A 3-D connection method is proposed because the measurement range of the antenna exceeds effective view field of the cameras. The shape of the microwave antenna can be found by curve surface fit.
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