一种便携式伪随机编码超宽带人体感知雷达设计

被引:12
作者
夏正欢 [1 ,2 ]
张群英 [1 ]
叶盛波 [1 ]
吴世有 [1 ]
谭恺 [1 ,2 ]
方广有 [1 ]
阴和俊 [3 ]
机构
[1] 中国科学院电磁辐射与探测技术重点实验室
[2] 中国科学院大学
[3] 中国科学院
关键词
超宽带雷达; 伪随机编码; 穿墙雷达; 生命探测雷达; 现场可编程门阵列(FPGA);
D O I
暂无
中图分类号
TN958 [雷达:按体制分];
学科分类号
080904 ; 0810 ; 081001 ; 081002 ; 081105 ; 0825 ;
摘要
该文提出了一种便携式伪随机编码超宽带人体感知雷达的设计方法。人体感知雷达主要包括对运动人体目标进行跟踪以及对静止人体目标的呼吸频率进行提取。为了获得较强的穿透能力与较好的距离分辨率,采用了载波为800 MHz的m序列作为雷达发射信号。为了减小雷达系统尺寸,采用高速DAC与FPGA直接合成m序列调制信号,发射信号的平均功率为5 d Bm。接收机具有两个混合采样接收通道,第1通道用于实时获得参考码,第2通道用于接收雷达回波。为了提高雷达系统扫描率,采用FPGA内部的多个DSP内核级联来实现脉冲压缩的并行计算。另外,动目标跟踪算法与生命探测算法在Intel处理器内运行,将探测结果传给头盔上的微型显示器进行显示。最后,通过穿墙实验表明,该雷达能实时跟踪墙后16 m内的动目标,同时能提取墙后14 m内静止人体的呼吸频率。
引用
收藏
页码:527 / 537
页数:11
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