摘要
削弱仰角变化对测向的影响是测向必须解决的一个关键问题。以均匀五阵元为例,从理论上分析2种基线组合方式在仰角变化时相位差的变化,通过对比,提出选取对高低仰角不敏感的短基线组合。通过仿真对比两种基线组合方式在测向精度以及仰角变化承受能力方面的优劣,进一步说明短基线组合方式以测向精度的微弱降低为代价,能更好的适应高仰角情况下的测向。
Decreasing effects of elevation variation to direction finding is one of the key problems to be solved. Taking the uniform five-antenna circle array as an example, the theory change of phase data in two baseline combination with elevation variation is analyzed. According to comparison, one baseline combination is selected which is insensitive to elevation variation. Estimating accuracy and flexibility of elevation variation of two combination methods are compared by computer simulation. The simulation results show that the short baseline combination method is prior to conventional combination in phase data table performance of high elevation expect for slightly lower estimating accuracy.
出处
《计算机与网络》
2010年第11期50-52,共3页
Computer & Network
关键词
相关干涉仪
高低仰角
基线组合
相关表
correlative intefferometer
high and low elevation
baseline combination
phase data table
