基本信息

---

下载

   友情提示：（无需注册或充值，赞助后即可获取资源下载链接）

---

     嘿，亲！知识可是无价之宝呢，但咱这精心整理的资料也耗费了不少心血呀。小小地破费一下，绝对物超所值哦！如有下载和支付问题，请联系我们QQ(微信同号)：813200300

本次赞助数额为： 2 元　

支付宝支付

微信支付

   源码介绍

---

属于实时性要求比较高的开发案例

//-------------------------------------------------------------------------
//
//  This is part of the STK 8 Object Model Examples
//  Copyright (C) 2006 Analytical Graphics, Inc.
//
//  This source code is intended as a reference to users of the
//	STK 8 Object Model.
//
//  File: Form1.cs
//  GPSDatabaseAccessDemo
//
//  This program demonstrates use of the STK Object Model in conjunction
//	with two other integrable technologies, an odbc data source in the form
//	of a microsoft access database, and XML.  The example loads a GPS constellation of
//	satellites from a preexisting database, and does the same of a facility from a
//	previously defined xml file containing positional data. It then computes and
//	retreives access data, and writes the output to an XML file. 
//
//  The features used are: Basic object manipulation, SGP4 Propagation,
//	Facility positioning, and Access computation/data providers.
//
//--------------------------------------------------------------------------

using System;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.IO;
using System.Data;
using System.Data.Odbc;
using System.Xml;
using AGI.STKObjects;

namespace OMDemo
{
	/// <summary>
	/// GPSDatabaseAccessDemo
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private AGI.STKObjects.AgStkObjectRootClass objModelRoot;
		private AGI.STKObjects.IAgStkObjectElementCollection Satellites = null;
		private AGI.STKObjects.AgFacilityClass Facility = null;
		private AGI.STKObjects.IAgStkAccess Access = null;

		#region FormSetup
		#region FormControls

		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.GroupBox groupBox3;
		private System.Windows.Forms.Button ComputeButton;
		private System.Windows.Forms.Button loadSatButton;
		private System.Windows.Forms.Button loadFacilityButton;
		private AxAGI.STKX.AxAgUiAxVOCntrl axAgUiAxVOCntrl1;

		/// <summary>
		/// Required designer variable.
		/// </summary>
		///
		private System.ComponentModel.Container components = null;

		#endregion

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.loadSatButton = new System.Windows.Forms.Button();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.loadFacilityButton = new System.Windows.Forms.Button();
			this.groupBox3 = new System.Windows.Forms.GroupBox();
			this.ComputeButton = new System.Windows.Forms.Button();
			this.axAgUiAxVOCntrl1 = new AxAGI.STKX.AxAgUiAxVOCntrl();
			this.groupBox1.SuspendLayout();
			this.groupBox2.SuspendLayout();
			this.groupBox3.SuspendLayout();
			((System.ComponentModel.ISupportInitialize)(this.axAgUiAxVOCntrl1)).BeginInit();
			this.SuspendLayout();
			// 
			// groupBox1
			// 
			this.groupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.groupBox1.Controls.Add(this.loadSatButton);
			this.groupBox1.Location = new System.Drawing.Point(10, 471);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(288, 147);
			this.groupBox1.TabIndex = 2;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "Satellite Setup";
			// 
			// loadSatButton
			// 
			this.loadSatButton.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.loadSatButton.Cursor = System.Windows.Forms.Cursors.Hand;
			this.loadSatButton.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.loadSatButton.Location = new System.Drawing.Point(29, 28);
			this.loadSatButton.Name = "loadSatButton";
			this.loadSatButton.Size = new System.Drawing.Size(217, 102);
			this.loadSatButton.TabIndex = 7;
			this.loadSatButton.Text = "Load Satellites From Database";
			this.loadSatButton.Click  = new System.EventHandler(this.loadSatButton_Click);
			// 
			// groupBox2
			// 
			this.groupBox2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.groupBox2.Controls.Add(this.loadFacilityButton);
			this.groupBox2.Location = new System.Drawing.Point(307, 471);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.Size = new System.Drawing.Size(288, 147);
			this.groupBox2.TabIndex = 3;
			this.groupBox2.TabStop = false;
			this.groupBox2.Text = "Facility Setup";
			// 
			// loadFacilityButton
			// 
			this.loadFacilityButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.loadFacilityButton.Cursor = System.Windows.Forms.Cursors.Hand;
			this.loadFacilityButton.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.loadFacilityButton.Location = new System.Drawing.Point(38, 28);
			this.loadFacilityButton.Name = "loadFacilityButton";
			this.loadFacilityButton.Size = new System.Drawing.Size(218, 102);
			this.loadFacilityButton.TabIndex = 0;
			this.loadFacilityButton.Text = "Load Facility From XML";
			this.loadFacilityButton.Click  = new System.EventHandler(this.loadFacilityButton_Click);
			// 
			// groupBox3
			// 
			this.groupBox3.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.groupBox3.Controls.Add(this.ComputeButton);
			this.groupBox3.Location = new System.Drawing.Point(605, 471);
			this.groupBox3.Name = "groupBox3";
			this.groupBox3.Size = new System.Drawing.Size(144, 147);
			this.groupBox3.TabIndex = 4;
			this.groupBox3.TabStop = false;
			this.groupBox3.Text = "Access";
			// 
			// ComputeButton
			// 
			this.ComputeButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
			this.ComputeButton.Enabled = false;
			this.ComputeButton.Location = new System.Drawing.Point(14, 28);
			this.ComputeButton.Name = "ComputeButton";
			this.ComputeButton.Size = new System.Drawing.Size(111, 101);
			this.ComputeButton.TabIndex = 1;
			this.ComputeButton.Text = "Compute And Write To XML";
			this.ComputeButton.Click  = new System.EventHandler(this.ComputeButton_Click);
			// 
			// axAgUiAxVOCntrl1
			// 
			this.axAgUiAxVOCntrl1.Enabled = true;
			this.axAgUiAxVOCntrl1.Location = new System.Drawing.Point(0, 0);
			this.axAgUiAxVOCntrl1.Name = "axAgUiAxVOCntrl1";
			this.axAgUiAxVOCntrl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axAgUiAxVOCntrl1.OcxState")));
			this.axAgUiAxVOCntrl1.Size = new System.Drawing.Size(760, 464);
			this.axAgUiAxVOCntrl1.TabIndex = 5;
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
			this.ClientSize = new System.Drawing.Size(758, 627);
			this.Controls.Add(this.axAgUiAxVOCntrl1);
			this.Controls.Add(this.groupBox1);
			this.Controls.Add(this.groupBox2);
			this.Controls.Add(this.groupBox3);
			this.MinimumSize = new System.Drawing.Size(640, 578);
			this.Name = "Form1";
			this.Text = "GPSDemo";
			this.Load  = new System.EventHandler(this.Form1_Load);
			this.groupBox1.ResumeLayout(false);
			this.groupBox2.ResumeLayout(false);
			this.groupBox3.ResumeLayout(false);
			((System.ComponentModel.ISupportInitialize)(this.axAgUiAxVOCntrl1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion
		#endregion
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			objModelRoot = new AGI.STKObjects.AgStkObjectRootClass();
			objModelRoot.NewScenario("ObjectModelGPSDemo");
			IAgScenario scene = (IAgScenario)objModelRoot.CurrentScenario;
			scene.StartTime = "1 Jul 2005 12:00:00.000";
			scene.StopTime = "5 Jul 2005 12:00:00.000";
		}

		private void loadSatButton_Click(object sender, System.EventArgs e)
		{
			loadSatButton.Enabled = false;
			if (!loadFacilityButton.Enabled) ComputeButton.Enabled = true;

			ConnectAndLoadGPSDatabase();
		}

		private void ConnectAndLoadGPSDatabase()
		{
			// Connect to GPS satellite database
			string ConnectionString =
				@"Driver={Microsoft Access Driver (*.mdb)};DBQ="
				  Directory.GetCurrentDirectory()   @"\..\..\GPS.mdb";

			OdbcConnection odbcConnection = new OdbcConnection(ConnectionString);
			OdbcCommand odbcCmd = new OdbcCommand("Select * FROM TLETable");
			odbcCmd.Connection = odbcConnection;
			odbcConnection.Open();

			OdbcDataReader odbcReader = odbcCmd.ExecuteReader();
			while (odbcReader.Read())
			{
				AddGPSSatellite(odbcReader);
			}

			Satellites = objModelRoot.CurrentScenario.Children.GetElements(
				AGI.STKObjects.AgESTKObjectType.eSatellite);

			objModelRoot.Rewind();
			odbcReader.Close();
			odbcConnection.Close();
		}

		private void AddGPSSatellite(OdbcDataReader dataSource)
		{
			// Define GPS satellite from the datasource using the SGP4 propagator
			// to configure and propagate the satellite.

			AGI.STKObjects.IAgSatellite Satellite = (AGI.STKObjects.IAgSatellite)objModelRoot.
				CurrentScenario.Children.New(AGI.STKObjects.AgESTKObjectType.eSatellite, "GPS"   dataSource.GetString(0));

			Satellite.SetPropagatorType(AGI.STKObjects.AgEVePropagatorType.ePropagatorSGP4);
			AGI.STKObjects.IAgVePropagatorSGP4 SGP4 = (AGI.STKObjects.IAgVePropagatorSGP4)Satellite.Propagator;

			SGP4.StartTime = "1 Jul 2005 12:00:00.000";
			SGP4.StopTime  = "5 Jul 2005 12:00:00.000";

			SGP4.Segments.AddSeg();
			AGI.STKObjects.IAgVeSGP4Segment Segment = (AGI.STKObjects.IAgVeSGP4Segment)SGP4.Segments[0];

			Segment.SSCNum			= dataSource.GetString(0);
			Segment.Classification	= dataSource.GetString(1);
			Segment.IntlDesignator	= dataSource.GetString(2);
			Segment.Epoch			= dataSource.GetDouble(3);
			Segment.BStar			= dataSource.GetDouble(4);
			Segment.RevNumber		= dataSource.GetInt32(5);
			Segment.Inclination		= dataSource.GetDouble(6);
			Segment.RAAN			= dataSource.GetDouble(7);
			Segment.Eccentricity	= dataSource.GetDouble(8);
			Segment.ArgOfPerigee	= dataSource.GetDouble(9);
			Segment.MeanAnomaly		= dataSource.GetDouble(10);
			Segment.MeanMotion		= dataSource.GetDouble(11);

			SGP4.Propagate();
		}

		private void ComputeButton_Click(object sender, System.EventArgs e)
		{
			ComputeAndWriteAccessXML();
		}

		private void ComputeAndWriteAccessXML()
		{
			// Compute Access from each GPS satellite to the loaded facility,
			// and write access data to XML document

			XmlTextWriter AccessXML = new XmlTextWriter(Directory.GetCurrentDirectory()   @"\..\..\Access.xml", null);
			AccessXML.Formatting = Formatting.Indented;
			AccessXML.WriteStartDocument();
			AccessXML.WriteStartElement("GPS_Satellite_Access");
			foreach (AGI.STKObjects.IAgStkObject Satellite in Satellites)
			{
				Access = (AGI.STKObjects.IAgStkAccess)Satellite.GetAccessToObject(Facility);
				Access.AccessTimePeriod = AGI.STKObjects.AgEAccessTimeType.eScenarioAccessTime;
				Access.ComputeAccess();

				// Only report specific data using the data provider's ExecElements functionality
				// to specify certain elements of the access data set

				AGI.STKObjects.IAgScenario Scenario = (AGI.STKObjects.IAgScenario)objModelRoot.CurrentScenario;
				System.Array Elements = new object[] { "Start Time", "Stop Time", "Duration" };
				AGI.STKObjects.IAgDataProvider DataProvider = (AGI.STKObjects.IAgDataProvider)Access.DataProviders["Access Data"];
				AGI.STKObjects.IAgDrResult Result = ((AGI.STKObjects.IAgDataPrvInterval)DataProvider).ExecElements(
					Scenario.StartTime,
					Scenario.StopTime,
					ref Elements);

				WriteAccessElement(Satellite, Result, AccessXML);
			}
			AccessXML.WriteEndElement();
			AccessXML.Flush();
			AccessXML.WriteEndDocument();
			AccessXML.Close();
		}

		private void WriteAccessElement(IAgStkObject Satellite, IAgDrResult Result, XmlTextWriter AccessXML)
		{
			// Write access data to XML

			AccessXML.WriteStartElement(Satellite.InstanceName   "_To_"   Facility.InstanceName);
			foreach (AGI.STKObjects.IAgDrInterval AccessInterval in Result.Intervals)
			{
				for(int Access = 0; Access < AccessInterval.DataSets[0].Count; Access  )
				{
					AccessXML.WriteStartElement("Access");

					AccessXML.WriteStartElement("Start_Time");
					AccessXML.WriteString(AccessInterval.DataSets[0].GetValues().GetValue(Access).ToString());
					AccessXML.WriteEndElement();
					AccessXML.WriteStartElement("Stop_Time");
					AccessXML.WriteString(AccessInterval.DataSets[1].GetValues().GetValue(Access).ToString());
					AccessXML.WriteEndElement();
					AccessXML.WriteStartElement("Duration");
					AccessXML.WriteString(AccessInterval.DataSets[2].GetValues().GetValue(Access).ToString());
					AccessXML.WriteEndElement();

					AccessXML.WriteEndElement();
				}
			}
			AccessXML.WriteEndElement();
		}

		private void loadFacilityButton_Click(object sender, System.EventArgs e)
		{
			loadFacilityButton.Enabled = false;
			if (!loadSatButton.Enabled) ComputeButton.Enabled = true;

			LoadFacilityXML();
		}

		private void LoadFacilityXML()
		{
			// Define a facility from an existing XML file containing structured positional data

			AGI.STKObjects.IAgGeodetic FacPosition = null;
			XmlTextReader FacilityXML = new XmlTextReader (Directory.GetCurrentDirectory()   @"\..\..\Facility.xml");
			while (FacilityXML.Read())
			{
				if (FacilityXML.NodeType == XmlNodeType.Element)
				{
					if (FacilityXML.LocalName.Equals("InstanceName"))
					{
						Facility = (AGI.STKObjects.AgFacilityClass)objModelRoot.CurrentScenario.Children.New(
							AGI.STKObjects.AgESTKObjectType.eFacility, FacilityXML.ReadString());
						FacPosition = (AGI.STKObjects.IAgGeodetic)Facility.Position.ConvertTo(
							AGI.STKObjects.AgEPositionType.eGeodetic);
					}
					if (FacilityXML.LocalName.Equals("Latitude"))  FacPosition.Lat = Convert.ToDouble(FacilityXML.ReadString());
					if (FacilityXML.LocalName.Equals("Longitude")) FacPosition.Lon = Convert.ToDouble(FacilityXML.ReadString());
					if (FacilityXML.LocalName.Equals("Altitude"))  FacPosition.Alt = Convert.ToDouble(FacilityXML.ReadString());
				}
			}
			Facility.Position.Assign(FacPosition);
		}
	}
}