The characteristic analysis and optimization of quadrant detector signal
In this paper, a matched condition is given to ensure maximum linear interval of quadrant detector output signal, the condition is a ratio of spot size to photosurface radius corresponding to the optimum linear characteristic of detector output signal. For the optimum detector output signal, a subsection linearization method is put forward to fit the characteristic parameters of the signal. The simulation results show that, when the condition and the method was used together, maximum linear interval of quadrant detector can be obtained, the linear interval of detector expands by 20 to 30 percent, and the average nonlinear error can decrease to 1/10, compared with multi-calibration and least square fitting in entire linear interval.
Quadrant detector Spot radius Nonlinear error Characteristic optimization
Dang Liping Zhou Zhou Tang Shugang
Institute of Navigate Northwestern Polytechnical University,Military Office Stationed in Northwester Department of science and technology Institute Surveying and mapping in Xian,Xian,China
国际会议
上海
英文
2005-2009
2009-11-20（万方平台首次上网日期，不代表论文的发表时间）