JAVA：距离后方交会算法GUI实现

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编译环境：

操作系统：Win8.1 64位

IDE平台：Visual Studio 2013 Ultimate

一、原理

在待测点P上观测距离距离S1，S2，S3,进而确定P的平面坐标：

二、代码实现

距离后方交会.java

package text;import java.awt.*;import java.awt.event.*;import java.math.*;import javax.swing.*;import javax.swing.border.Border;public class 距离后方交会 extends JFrame{   public static final int TEXTAREA_ROWS = 20;   public static final int TEXTAREA_COLUMNS = 40;    public 距离后方交会()   {    final JTextField A_X = new JTextField("37477");      final JTextField A_Y = new JTextField("16307");      final JTextField B_X = new JTextField("37327");      final JTextField B_Y = new JTextField("16078");          final JTextField C_X = new JTextField("37163");      final JTextField C_Y = new JTextField("16046");      final JTextField S_1 = new JTextField("200");      final JTextField S_2 = new JTextField("200");      final JTextField S_3 = new JTextField("200");      JPanel northPanel = new JPanel();      JPanel WestPanel = new JPanel();      JLabel pic= new JLabel();      pic.setIcon(new ImageIcon("G:/workplace/距离后方交会/4.png"));      WestPanel.add(pic);      getContentPane().add(WestPanel, BorderLayout.WEST);      JPanel northPane2 = new JPanel();    //距离前方交会          northPane2.setLayout(new GridLayout(3, 4));          northPane2.add(new JLabel("A_X: ", SwingConstants.CENTER));          northPane2.add(A_X);          northPane2.add(new JLabel("A_Y: ", SwingConstants.CENTER));          northPane2.add(A_Y);          northPane2.add(new JLabel("B_X: ", SwingConstants.CENTER));          northPane2.add(B_X);          northPane2.add(new JLabel("B_Y: ", SwingConstants.CENTER));          northPane2.add(B_Y);          northPane2.add(new JLabel("C_X: ", SwingConstants.CENTER));          northPane2.add(C_X);          northPane2.add(new JLabel("C_Y: ", SwingConstants.CENTER));          northPane2.add(C_Y);          northPane2.add(new JLabel("S1: ", SwingConstants.CENTER));          northPane2.add(S_1);          northPane2.add(new JLabel("S2: ", SwingConstants.CENTER));          northPane2.add(S_2);          northPane2.add(new JLabel("S3: ", SwingConstants.CENTER));          northPane2.add(S_3);      Border etched = BorderFactory.createEtchedBorder();      Border titled = BorderFactory.createTitledBorder(etched, "距离后方交会");      northPanel.setBorder(titled);      getContentPane().add(northPane2, BorderLayout.NORTH);            final JTextArea textArea = new JTextArea(20,40);      JScrollPane scrollPane = new JScrollPane(textArea);      getContentPane().add(scrollPane, BorderLayout.CENTER);      // add button to append text into the text area      JPanel southPanel = new JPanel();      JButton insertButton = new JButton("计算P点坐标");      insertButton.addActionListener(new ActionListener()         {            public void actionPerformed(ActionEvent event)            {          //坐标初始化            Double X1=Double.valueOf(A_X.getText()).doubleValue();            Double Y1=Double.valueOf(A_Y.getText()).doubleValue();            Double X2=Double.valueOf(B_X.getText()).doubleValue();            Double Y2=Double.valueOf(B_Y.getText()).doubleValue();            Double X3=Double.valueOf(C_X.getText()).doubleValue();            Double Y3=Double.valueOf(C_Y.getText()).doubleValue();            Double S1=Double.valueOf(S_1.getText()).doubleValue();            Double S2=Double.valueOf(S_2.getText()).doubleValue();            Double S3=Double.valueOf(S_3.getText()).doubleValue();                      //A、B、P              Double D_AB=Math.sqrt(Math.pow((X1-X2),2)+Math.pow((Y1-Y2),2));            Double α_AB=Math.acos((D_AB*D_AB+S1*S1-S2*S2)/(2*D_AB*S1));            Double α_1=Math.atan(Math.abs(Y2-Y1)/Math.abs(X2-X1));            Double α_2=α_AB-α_1;            Double XP1=X1+S1*Math.cos(α_2);            Double YP1=Y1-S1*Math.sin(α_2);                      //B、C、P            Double D_BC=Math.sqrt( Math.pow((X3-X2),2)+Math.pow((Y3-Y2),2));            Double α_BC=Math.acos((D_BC*D_BC+S2*S2-S3*S3)/(2*D_BC*S2));            Double α_3=Math.atan(Math.abs(Y3-Y2)/Math.abs(X3-X2));            Double α_4=α_BC-α_3;            Double XP2=X1+S1*Math.cos(α_4);            Double YP2=Y1-S1*Math.sin(α_4);                         textArea.append("=====距离后方交会===="+"\n"+"参考值1:"+ "( " +XP1+","+YP1+")"                        +  "\n"+"参考值2:"+"( " +XP2+","+YP2+")"                        +  "\n"+"误差距离约:"+Math.round(miss(XP1,YP1,XP2,YP2))+"米");            //textArea.append("测试："+β_2);            }            public double miss(double XP1,double YP1,double XP2,double YP2){            return Math.sqrt(Math.pow((XP1-XP2),2)+Math.pow((YP1-YP2),2));            }            public double convert(String input){            Double a=Double.valueOf(input.split("°")[0]).doubleValue();            Double b=Double.valueOf(input.split("°")[1].split("'")[0]).doubleValue();            return a+b/60;            }         });     add(insertButton, BorderLayout.SOUTH);      pack();   }}

Test.java

package text;import java.awt.*;import javax.swing.*;public class Test{   public static void main(String[] args)   {      EventQueue.invokeLater(new Runnable()         {            public void run()            {               JFrame frame = new 距离后方交会();               frame.setTitle("距离后方交会");               frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);               frame.setVisible(true);            }         });   }}

三、运行结果

下载：距离后方交会算法JAVA工程包

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