EM-HMM Multiple Frequency Line Tracking Algorithm

XIE Xian-ya; WANG Jia-ding; LI Huan-run

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EM-HMM Multiple Frequency Line Tracking Algorithm

更新时间：2025-07-16

- EM-HMM Multiple Frequency Line Tracking Algorithm
- Acta Electronica Sinica Vol. 30, Issue 1, Pages: 22-26(2002)
- 作者机构：
  
  1. 上海大学自动化系,上海,200072
  2. 上海大学计算机系,上海,200072
  3. 上海大学自动化系上海,200072
  4. 上海大学计算机系上海,200072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.7
- Published：2002
- 稿件说明：
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XIE Xian-ya, WANG Jia-ding, LI Huan-run. EM-HMM Multiple Frequency Line Tracking Algorithm[J]. Acta Electronica Sinica, 2002, 30(1): 22-26.
DOI：

XIE Xian-ya, WANG Jia-ding, LI Huan-run. EM-HMM Multiple Frequency Line Tracking Algorithm[J]. Acta Electronica Sinica, 2002, 30(1): 22-26. DOI：

摘要

基于隐马尔可夫模型的多频率线跟踪算法

能在很低的SNR环境下工作

但量化误差较大

和计算量大.本文提出另一种选择量测向量和计算量测概率的方法

创造条件减小量化误差.又经简单论证

将EM算法和HMM用于多频率线跟踪

严格地(而不是启发式地)得到EM-HMM算法

可以极大地减少计算量.本文又提出获得初始估计以启动EM-HMM算法的二种方法.仿真计算表明

所提的算法是有效的.

Abstract

The HMM based multiple frequency line tracking algorithms of work well under very low SNR

except for a high complexity of computation and for generally unnegligible quantization error.In this paper a new choice of measurement vector and the corresponding computation of measurement probability are presented to reduce the quantization error.And to reduce the computation burden

the idea of the EM algorithm is applied to the multiple frequency line case and the EM-HMM tracking algorithm is naturally developed.Finally

two methods for initializing the EM-HMM algorithm are presented.Simulations show that all these are effective.

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