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本文简述了DDS方法的建模过程。对一组工程数据,在用FFT分析了频谱的基础上,重新采样并用DDS方法处理了这组数据。由于对同一序列的各样本建模结果不一致,提出了用多样本统一建模的方法。所建的统一模型效果比较好,方位角和高低角量测误差的方差可以用此模型滤波后分别降低70％和84％。对DDS的这一改进建模方法、同样可以用于其他多样本数据的处理。
This article briefly describes the modeling process of the DDS method. For a set of engineering data, based on FFT analysis of the spectrum, resample and process this set of data using the DDS method. Due to inconsistent results of modeling samples in the same sequence, a method of unified modeling with multiple samples is proposed. The unified model is better, and the variance of azimuth and elevation angle errors can be reduced by 70% and 84% respectively after filtering with this model. This improved modeling approach to DDS can also be applied to the processing of other multi-sample data.