惯导辅助的波束形成技术研究
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摘要
介绍了惯导辅助的波束形成技术,该方法实时装订目标的位置信息并通过惯性测量模块实时输出载体自身的位置、姿态信息,将这些信息经过适当的坐标平移和转换,计算出波束指向向量,并进一步计算出阵列天线的俯仰和方位角,更新阵列天线的权值并进行波束形成。和传统波束形成算法相比,本算法角度计算不受信噪比的影响,可以保证低信噪比环境下阵列天线的信噪比增益不会损失,是设计高增益接收机的关键技术,缺点是硬件平台需增加惯性测量模块。
The beam forming technology aided by INS is introduced. By use of the inertial measurement units, the position and attitude information of carriers can be output in real time. The position information of the target is also given out periodically from parameter loading module. After several coordinate conversions, this information is transferred to the same coordinate to calculate the array steering vector, and further to calculate the azimuth and pitching angel of the antenna array. Then weights are updated according to the newly calculated angels to perform digital beam forming. Compared with traditional algorithms, angel calculating performance by this method makes no difference with different SNR. Therefore, SNR gain of array antenna under low SNR conditions can be established perfectly as well,which is the main technology for high gain receiver designing. However, the INS module is requested to add in the hardware platform as the cost.
The beam forming technology aided by INS is introduced. By use of the inertial measurement units, the position and attitude information of carriers can be output in real time. The position information of the target is also given out periodically from parameter loading module. After several coordinate conversions, this information is transferred to the same coordinate to calculate the array steering vector, and further to calculate the azimuth and pitching angel of the antenna array. Then weights are updated according to the newly calculated angels to perform digital beam forming. Compared with traditional algorithms, angel calculating performance by this method makes no difference with different SNR. Therefore, SNR gain of array antenna under low SNR conditions can be established perfectly as well,which is the main technology for high gain receiver designing. However, the INS module is requested to add in the hardware platform as the cost.
引文
[1] 刘菊荣.基于数字波束形成技术的导弹引信信号处理器设计与实现[D].长沙:国防科学技术大学,2009:4-11.
[2] 李洪涛.自适应数字波束形成关键技术研究[D].南京:南京理工大学,2012:8-77.
[3] 陈帅霖.收发全数字波束形成技术研究[D].西安:西安电子科技大学,2012:6-43.
[4] 刘聪锋.稳健的自适应波束形成与空时自适应处理算法研究[D].西安:西安电子科技大学,2008:11-128.
[5] 杨洁.阵列数字波束形成算法及实现研究[D].南京:南京理工大学,2013:9-17.
[6] 张毅,肖龙旭,王顺宏.弹道导弹弹道学[M].北京:国防科技大学出版社,2005:5-30.
[7] 郝辉,李雪瑞,舒健生,等.导弹常用空间直角坐标系间转换方法[J].四川兵工学报,2013,34(2):18-20.
[8] 马清华,王明海.弹道导弹常用坐标系及其转换[J].火力与指挥控制,2004,(29):89-91.
[9] 曹钢.基于FPGA的数字波束形成研究[D].西安:西安电子科技大学,2007:13-32.
[2] 李洪涛.自适应数字波束形成关键技术研究[D].南京:南京理工大学,2012:8-77.
[3] 陈帅霖.收发全数字波束形成技术研究[D].西安:西安电子科技大学,2012:6-43.
[4] 刘聪锋.稳健的自适应波束形成与空时自适应处理算法研究[D].西安:西安电子科技大学,2008:11-128.
[5] 杨洁.阵列数字波束形成算法及实现研究[D].南京:南京理工大学,2013:9-17.
[6] 张毅,肖龙旭,王顺宏.弹道导弹弹道学[M].北京:国防科技大学出版社,2005:5-30.
[7] 郝辉,李雪瑞,舒健生,等.导弹常用空间直角坐标系间转换方法[J].四川兵工学报,2013,34(2):18-20.
[8] 马清华,王明海.弹道导弹常用坐标系及其转换[J].火力与指挥控制,2004,(29):89-91.
[9] 曹钢.基于FPGA的数字波束形成研究[D].西安:西安电子科技大学,2007:13-32.