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本文讨论了利用直角平面扫描近场振幅数据重建远场的理论及计算方法。提出了提高精度和节省计算时间的数据处理方法。用典型问题检验了理论和计算机软件的可行性。研究表明,当两个测量面之间的距离足够大时,不需要任何相位信息就可以重建远场,增加一定的附加信息,可以减少两个测量面之间的距离、提高收敛速度和计算精度。应用这一技术,使得只具有振幅测量设备的一般实验室也有可能利用近场扫描技术进行天线和目标特性的测量。
This paper discusses the theory and calculation method of reconstruction of far-field using rectangular plane-scan near-field amplitude data. Proposed to improve the accuracy and save data processing time calculation method. With the typical problems, the feasibility of theory and computer software was tested. The research shows that when the distance between two measuring surfaces is large enough, the far field can be reconstructed without any phase information, and some additional information can be added to reduce the distance between the two measuring surfaces and improve the convergence speed and accuracy . Using this technique, it is also possible for general labs with only amplitude measurement equipment to use near-field scanning techniques for the measurement of antenna and target characteristics.