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1991年12月,石镇教授领导的“空间谱估计测向系统”课题通过了电科院组织的技术鉴定.空间谱估计是八十年代以来国际上热门课题与前沿课题,是解决多波测向、定位问题的最有效技术。课题组从两个方面对课题进行了研究,在空间谱估计方面应用修正空间平滑法实现三元均匀直线阵空间谱估计测向,在短波范围内成功地实现了小阵列空间谱估计对单波、双波的测向和双径相干波的分离与测向。其均方根误差小于1°(对双径相干波
In December 1991, Professor Shi Zhen’s “Space Spectrum Estimation and Direction Finding System” passed the technical appraisal organized by EPRI.Space spectrum estimation is a hot subject and a frontier topic in the world since the 1980s, To, locate the most effective technique of the problem. The research group has carried on the research to the subject from two respects, applies space-of-smoothing method in the spatial spectrum estimation to realize the terrestrial uniform linear space spectrum spectrum estimation and direction finding, and succeeds in the small-array spatial spectrum estimation to single-wave , Dual wave direction finding and the separation and direction finding of double coherent wave. The root mean square error is less than 1 ° (for dual-path coherent wave