摘要
在无机械连接的方位角测量系统的研制中 ,通过对磁光材料的特性及磁旋光温漂的成因分析 ,采用直接读出解调和方位随动测角的方法 ,有效的降低了由Verdet常数变化引起的磁旋光漂移导致的方位失调角变化 使得系统可以在无需补偿和预热的情况下实时测量 ,方位测角精度 3δ小于 5″
Faraday rotation drift always is a key factor that restricts the use of magnetooptic modulation. The directly readout demodulation and synchronization method is used in disconnect mechanically azimuth measurement which is based on polarization testing and magnetooptic modulation. When using this method, the drift of azimuth caused by verdet variety along with temperature is in good control. This instrument can operate in real time without compensation, and the azimuth measuring precision of this instrument is less than 5 ″(3δ).
出处
《光子学报》
EI
CAS
CSCD
北大核心
2004年第5期638-640,共3页
Acta Photonica Sinica
关键词
磁旋光漂移
磁光调制
方位测角
Faraday rotation drift
Magnetooptic modulation
Azimuth measurement
