空间谱测向算法的实数域定点实现技术  

Real Field and Fixed Implementing Technology of Spatial Spectrum Estimation Algorithm

作　　者：张智锋[1] 王艳温[1] 母诗源 ZHANG Zhi-feng;WANG Yan-wen;MU Shi-yuan(The 54th Research Institute of CETC,Shijiazhuang Hebei 050081)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《数字技术与应用》2021年第5期94-96,共3页Digital Technology & Application

摘　　要：针对空间谱估计算法在工程实现中实时性差的问题,提出了一种实数域与定点化的综合处理方法。首先给出了实现实数域所需要的预处理过程,并对实数域和复数域的计算量作了对比。随后给出了浮点数转换成定点数的方法以及程序变量的定标方法,利用Matlab对空间谱估计算法作定点仿真,确定实现步骤中每个变量的定标,最后在定点DSP6455上得以实现。所提方法已应用于实际工程项目中,验证了可行性和稳健性,最后指出了方法的优点与不足。To solve the problem that the bad quality of real-time of spatial spectrum estimation algorithm,a new integrated processing technology based on real-field and fixed-point transformation is presented.Firstly,a preprocessing method of complex to real is discussed,and calculation analysis is done.Secondly,the methods of floating-point to fixed-point transformation and variable calibration are given.Fixed-point simulation is done by using Matlab in order to confirm the calibration of every variable of realization,and algorithm is implemented on DSP6455.Lastly,the algorithm is carried out in military serial projects and its feasibility and robustness is proved.The advantage and shortage of the algorithm is given.

关 键 词：空间谱估计 实时性 实数域 定点化 定标 

分 类 号：TN911[电子电信—通信与信息系统]