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论文:2014,Vol:32,Issue(2):273-278 |
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引用本文： |
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张鹏, 张林让. 一种用于高脉冲重复频率雷达的TBD检测算法[J]. 西北工业大学 |
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Zhang Peng, Zhang Linrang. A Track-Before-Detect Algorithm for High Pulse Repetition Frequency Radar[J]. Northwestern polytechnical university |
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| 一种用于高脉冲重复频率雷达的TBD检测算法 |
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| 张鹏, 张林让 |
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| 西安电子科技大学 雷达信号处理国防科技重点实验室, 陕西 西安 710071 |
| 摘要: |
| 针对高脉冲重复频率雷达高速运动弱小目标检测的距离模糊问题,提出了一种基于动态规划的检测前跟踪算法。在目标的状态转移方程中,将目标的实际距离转化为模糊距离和模糊数两个变量,将解距离模糊问题转换为对模糊距离和模糊数的联合估计问题。文中提出的基于动态规划的检测前跟踪算法,通过最大后验概率估计方法(MAP)联合估计目标的模糊距离、多普勒速度和模糊数的变化,在存在距离模糊的情况下完成了对高速弱小目标能量的积累和检测。仿真结果表明,在多重脉冲重复频率工作模式下,该算法对高速运动弱小目标具有很好的检测性能。 |
| 关键词:
高脉冲重复频率
距离模糊
模糊数
动态规划
检测前跟踪
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| A Track-Before-Detect Algorithm for High Pulse Repetition Frequency Radar |
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| Zhang Peng, Zhang Linrang |
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| National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China |
| Abstract: |
| In this paper,a novel track-before-detect (TBD) algorithm is proposed to detect radar high speed dim target for high pulse repetition frequency(HPRF) radars with range ambiguity. By considering the ambiguous radial range of the target and range ambiguous number as target states, the problem of range ambiguity resolving is conver-ted into the hybrid state estimation problem. We present a DP TBD method for joint maximum a posteriori (MAP ) estimation of the target trajectory in ambiguous range-Doppler maps and the corresponding sequence of incremental quantity of range ambiguous number. With the existence of range ambiguity, the detection of dim target through the accumulation of corresponding energy is realized by the proposed algorithm. Simulation results and their analysis confirm preliminarily that the proposed method is effective and applicable, thus improving the detection performance of radar high speed dim target. |
| Key words:
algorithms
computer simulation
conformal mapping
cost functions
Doppler effect
Doppler radar
dynamic positioning
efficiency
equations of state
errors
flowcharting
iterative methods
mathematical models
matrix algebra
probability
radar
radar tracking
state estimation
target tracking
targets
trajectories
HPＲF (high pulse repetition frequency)
range ambiguity
range ambiguous number
dynamic programming algorithm
track before detect
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| 收稿日期: 2013-10-13
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(61301281)资助 |
| 通讯作者:
Email： |
| 作者简介: 张鹏(1974-),西安电子科技大学博士研究生,主要从事雷达微弱目标检测和跟踪研究。
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| 作者相关文章 |
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| 张鹏 在本刊中的所有文章 |
| 张林让 在本刊中的所有文章 |
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参考文献: |
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