摘要
利用相位干涉仪测向仪测向时,存在多值模糊问题,为解决这一问题提出了用虚拟相位干涉仪清除长基线相位干涉仪测向时带来的多值模糊现象.利用多元线性回归法求出虚拟相位干涉仪在不同频率时所对应的虚拟短基线的长度L′,用此长度与实际长度L相配合,以达到测向的目的.用这种方法不但可以准确测向,而且还消除了由实际长度在测向中带来的多值模糊问题.建立了数学模型,进行了计算仿真与误差分析,结果表明,此方法可以准确测试入射波的方向,避免多值.
Simulation phase interferometer is used to delete the phenomenon of excessive values’ vague caused by long base line phase interferometer during direction finding. Multilpe sources linear regressions methods are used to extract the length of simulation short base line —“ L′ ” according to the different frequency so as to realize the way of direction measure ment. And it matches the actual length of “ L ”. It can measure direction correctly, and delete the phenomenon of excessive values’ vague caused by actual length.The mathematic model is erected to emulate this method and at the same time analyze the error.The emulation results show that this method can measure the direction of wave correctly and avoid excessive values.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2003年第5期571-573,577,共4页
Journal of Harbin Engineering University
关键词
多元回归
测向
虚拟相位干涉仪
multiple sources linear regressions
direction measure
simulation phase interferometer
