| Radio Holography is widely used in the on-site measurement of large reflector antennas internationally. It has the highest measurement accuracy of all the reflector antenna detections. The article has studied the theory about the radio holography in near-field. And a set of measurement system in 3mm band is built to do the experiment. It’s the first experiment of near-field radio holography in domestic. We have reached a new high of accuracy in reflector antenna measurement, and accumulated valuable experience for further mensuration of large reflector antennas.The article mainly consist of six chapters: research of the basic theory about near-field holography, analysis of the interfering factors during the experiment, assemblage of the near-field holography measurement system in 3mm band, development of the near-field holography measurement and minimization of the main effect caused by various error factors, assessment of the effect caused by error factors, development of the digital signal correlator for near-field holography. |
PDF Full Text Request