[求助]关于四象限探测器一致性
四象限探测器一致性需要哪些参数能把一致性对光斑的影响反映出来，应该怎么推导。是不要考虑量子效率以及吸收系数数。照在探测器上的光斑面积和入射光功率有什么转换关系，诚心向各位高手请教，能指点下，不胜感激哦 <p>不是太懂，但是帮你顶一下</p><p>从我了解的情况看，硅光四象限探测器都是把光谈侧面分隔成了四个等分，</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">其原点位于光学系统光轴上，并且光电转换器的接收面垂直于光轴。作用于各象限的信号经放大后，分别进行和差运算，从而折算出目标中心偏离光轴的水平方向和垂直方向的大小，其偏离信号输入计算机，并把和差运算结果反相，以使显示器显示结果与实际偏离一致。</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;"><span style="mso-spacerun: yes;"><font face="Times New Roman"></font></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%;"><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;"><span style="mso-spacerun: yes;"><font face="Times New Roman"></font></span></span></p><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;"><span style="mso-spacerun: yes;"><font face="Times New Roman"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">令四象限硅光电池的分界线与直角坐标轴重合，如图</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">所示。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';"><font face="Times New Roman"></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">假设目标经光学系统在四象限硅光电池上成一圆斑状的像且光斑均匀，按图</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">2-2</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">所示，设其中心坐标为（</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">x</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;"> y</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">），圆斑半径为</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">r</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，各象限上光斑面积占总光斑面积的百分比为</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">A</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">B</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">C</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">D</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，光斑总功率为</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">P </span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">K</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">为常数。则由图</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">2-2</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">的几何关系可得：</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;"><span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%; mso-char-indent-count: 2.0;"><span lang="EN-US">V<sub>x1</sub>=KP(A –C</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">－</span><span lang="EN-US">(B- D) )= 4KPx<sub>1</sub>/</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">π</span><span lang="EN-US">r</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';"> </span>
<span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';"> </span><span lang="EN-US"><span style="mso-spacerun: yes;"> </span><span style="mso-tab-count: 4;"> </span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">（</span><span lang="EN-US">1</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">）</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%; mso-char-indent-count: 2.0;"><span lang="EN-US">V<sub>y1</sub>=KP(A-C +</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">（</span><span lang="EN-US">B-D</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">）</span><span lang="EN-US">)= 4KPy<sub>1</sub>/</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">π</span><span lang="EN-US">r<span style="mso-tab-count: 6;"> </span><span style="mso-tab-count: 3;"> </span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">（</span><span lang="EN-US">2</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">）</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 125%;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">显然，当目标与</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">X</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">－</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">Y</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">平面原点重合时，</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">x<sub>1</sub></span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">＝</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">0</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">y<sub>1</sub></span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">＝</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">0 </span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，则</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">Vx<sub>1</sub>=0</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">，</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;"> Vy<sub>1</sub>=0;<p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 125%;"><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">因此，</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">A-C</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">和</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">B-D</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">作为输入端分别输入差分放大芯片</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;">AD620</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">。只要进行（</span><span lang="EN-US">1</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">）、（</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">2</span><span style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">）式的运算，用软件就可实现四象限的定位计算，并将值精确地反映至程序窗口上，从而能直观地观察到目标中心是否偏离，偏离方向及偏离度的大小。</span><span lang="EN-US" style="FONT-SIZE: 12pt; LINE-HEIGHT: 125%;"><p></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; 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