diff --git a/Plane.FormationCreator/Formation/RtcmManager.cs b/Plane.FormationCreator/Formation/RtcmManager.cs
index d2a3ff2..c66f8dd 100644
--- a/Plane.FormationCreator/Formation/RtcmManager.cs
+++ b/Plane.FormationCreator/Formation/RtcmManager.cs
@@ -101,33 +101,13 @@ namespace Plane.FormationCreator.Formation
             return typename;
 
         }
-        private void SetRTKStatestr()
-        {
-            string rtksstr= "";
-            //  ResendToCom
-            if (Rtcmthreadrun)
-            {
-                rtksstr = "RTK发送中 ";
-
-                if (SmallRtcmData)
-                    rtksstr += ",低带宽模式 ";
-                if (ResendToCom)
-                    rtksstr += ",双通道发送 ";
-                rtksstr += "...";
-            }
-            else
-                rtksstr = "RTK未发送";
-
-            ControlPanelVM.RTKState = rtksstr;
-
-        }
-            
         public bool Rtcmthreadrun
         {
             get { return _rtcmthreadrun; }
             set {
                 Set(nameof(Rtcmthreadrun), ref _rtcmthreadrun, value);
-                SetRTKStatestr();
+                var  _RtcmInfoViewModel = ServiceLocator.Current.GetInstance<RtcmInfoViewModel>();
+                _RtcmInfoViewModel.SetRTKStatestr();
             }
         }
 
@@ -137,7 +117,8 @@ namespace Plane.FormationCreator.Formation
             set
             {
                 Set(nameof(SmallRtcmData), ref _smallrtcmdata, value);
-                SetRTKStatestr();
+                var _RtcmInfoViewModel = ServiceLocator.Current.GetInstance<RtcmInfoViewModel>();
+                _RtcmInfoViewModel.SetRTKStatestr();
             }
         }
 
@@ -234,7 +215,8 @@ namespace Plane.FormationCreator.Formation
             get { return _sesendtocom; }
             set { 
                 Set(nameof(ResendToCom), ref _sesendtocom, value);
-                SetRTKStatestr();
+                var _RtcmInfoViewModel = ServiceLocator.Current.GetInstance<RtcmInfoViewModel>();
+                _RtcmInfoViewModel.SetRTKStatestr();
             }
         }
 
diff --git a/Plane.FormationCreator/ViewModels/ConnectViewModel.cs b/Plane.FormationCreator/ViewModels/ConnectViewModel.cs
index 961c927..e570af4 100644
--- a/Plane.FormationCreator/ViewModels/ConnectViewModel.cs
+++ b/Plane.FormationCreator/ViewModels/ConnectViewModel.cs
@@ -114,26 +114,28 @@ namespace Plane.FormationCreator.ViewModels
                 {
                     if (_commModuleManager.Recomisopen)
                     {
-                         //当前是否使用了广播端口
-                        if (_rtcmInfoViewModel.ResendToComMK)
+                        //关闭广播端口
+                        //正在发送rtcm数据并且使用了广播端口
+                        if (_rtcmInfoViewModel.RtcmManager.Rtcmthreadrun&& _rtcmInfoViewModel.ResendToComMK)
                         {
-                            if (Alert.Show("将同时关闭双通道发送RTK数据,继续吗？", "警告", MessageBoxButton.OKCancel, MessageBoxImage.Warning)
+                            if (Alert.Show("正在使用广播端口发送RTCM数据，关闭后广播端口将停止发送,继续吗？", "警告", MessageBoxButton.OKCancel, MessageBoxImage.Warning)
                                 == MessageBoxResult.OK)
                             {
-                                _rtcmInfoViewModel.ResendToComMK = false;
+                               // _rtcmInfoViewModel.ResendToComMK = false;
                             }
                             else
                             {
                                 return;
                             }
                         }
-                        _commModuleManager.CloseResendRtcmserial();
+                        //关闭同时清除广播端口，这样就不会重试打开
+                        _commModuleManager.CloseResendRtcmserial(true);
                         btnBoardPortStr = "打开广播端口";
                         BoardPortStatusStr = _commModuleManager.BoardPortStatusStr;
                         Message.BoardOpen(false);
                     }
                     else
-                    {
+                    {   //打开广播端口
 
                         if ((SerialPortResend != null))
                         {
@@ -155,6 +157,7 @@ namespace Plane.FormationCreator.ViewModels
                             return;
                         }
                     }
+                    _rtcmInfoViewModel.SetRTKStatestr();
                 }
                 ));
             }
@@ -231,7 +234,7 @@ namespace Plane.FormationCreator.ViewModels
             set { Set(nameof(CopterColor), ref _CopterColor, value); }
         }
 
-        private string _BoardPortStatusStr = "端口未打开";
+        private string _BoardPortStatusStr = "广播端口未打开";
         public string BoardPortStatusStr
         {
             get { return _BoardPortStatusStr; }
diff --git a/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs b/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs
index 7b5d56d..48e0849 100644
--- a/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs
+++ b/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs
@@ -409,6 +409,14 @@ namespace Plane.FormationCreator.ViewModels
                 }));
             }
         }
+        /// <summary>
+        /// 紧急返航：计算当前图案中心点，起飞图案中心点，图案距离起飞图案中心点最近距离
+        /// 条件：任务已经开始，且飞行器已经飞行
+        /// 可用于模拟和实际飞行，
+        /// 1首先需要导入最后的飞行任务文件，
+        /// 2实际飞机需要执行解锁和开始任务
+        /// 3模拟任务需要开始任务并且暂停任务才能计算
+        /// </summary>
         private ICommand _EmergencyRetCommand;
         public ICommand EmergencyRetCommand
         {
@@ -427,7 +435,7 @@ namespace Plane.FormationCreator.ViewModels
                     if ((_flightTaskManager.TaskState_real == TasksStatus.Stop) 
                         &&((_flightTaskManager.IsPaused ?? false) == false))
                     {
-                        Alert.Show("先暂停任务！", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                        Alert.Show("没有开始真实任务，模拟紧急返航需要先暂停模拟任务！", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                         return;
                     }
                     //if (Alert.Show("您确定要紧急返航吗？紧急返航可能导致飞行器碰撞！！！！", "警告", MessageBoxButton.OKCancel, MessageBoxImage.Warning)
diff --git a/Plane.FormationCreator/ViewModels/RtcmInfoViewModel.cs b/Plane.FormationCreator/ViewModels/RtcmInfoViewModel.cs
index 1334c81..e66f11d 100644
--- a/Plane.FormationCreator/ViewModels/RtcmInfoViewModel.cs
+++ b/Plane.FormationCreator/ViewModels/RtcmInfoViewModel.cs
@@ -1,5 +1,6 @@
 using GalaSoft.MvvmLight;
 using GalaSoft.MvvmLight.Command;
+using Microsoft.Practices.ServiceLocation;
 using Plane.CommunicationManagement;
 using Plane.FormationCreator.Formation;
 using Plane.Windows.Messages;
@@ -31,7 +32,27 @@ namespace Plane.FormationCreator.ViewModels
                 return _commModuleManager.BoardPortStatusStr;
             }
         }
+        private ControlPanelViewModel ControlPanelVM = ServiceLocator.Current.GetInstance<ControlPanelViewModel>();
+        public void SetRTKStatestr()
+        {
+            string rtksstr = "";
+            //  ResendToCom
+            if (_rtcmManager.Rtcmthreadrun)
+            {
+                rtksstr = "RTK发送中 ";
 
+                if (_rtcmManager.SmallRtcmData)
+                    rtksstr += ",低带宽模式 ";
+                if (_rtcmManager.ResendToCom && _commModuleManager.Recomisopen)
+                    rtksstr += ",双通道模式 ";
+                rtksstr += "...";
+            }
+            else
+                rtksstr = "RTK未发送";
+
+            ControlPanelVM.RTKState = rtksstr;
+
+        }
 
 
         private string _serialPortsSelectdValue;
@@ -56,7 +77,7 @@ namespace Plane.FormationCreator.ViewModels
             }
         }
 
-        private bool _resendtocommk;
+        private bool _resendtocommk=true;
         public bool ResendToComMK
         {
             get { return _resendtocommk; }
@@ -67,8 +88,7 @@ namespace Plane.FormationCreator.ViewModels
                 {   //发送
                     if (!_commModuleManager.Recomisopen)
                     {
-                        Alert.Show($"请在设置里面打开广播端口", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
-                        return;
+                        Alert.Show($"请先在设置里面打开广播端口，否则无法发送", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                     }
 
                 }
diff --git a/Plane.FormationCreator/Views/ConnectWindow.xaml b/Plane.FormationCreator/Views/ConnectWindow.xaml
index 5f60a4b..81c3715 100644
--- a/Plane.FormationCreator/Views/ConnectWindow.xaml
+++ b/Plane.FormationCreator/Views/ConnectWindow.xaml
@@ -70,7 +70,7 @@
                       ItemsSource="{Binding serialRePorts, Mode=OneWay}"
                       SelectedValue="{Binding SerialPortResend}"
                       DropDownOpened="ComboBox_DropDownOpened"/>
-            <TextBlock Margin="5" VerticalAlignment="Center" Text="{Binding BoardPortStatusStr}" />
+            <TextBlock Margin="10,5,5,5" VerticalAlignment="Center" Text="{Binding BoardPortStatusStr}" />
 
         </StackPanel>
 
diff --git a/Plane.FormationCreator/Views/RtcmInfoView.xaml b/Plane.FormationCreator/Views/RtcmInfoView.xaml
index b9b2928..3233c63 100644
--- a/Plane.FormationCreator/Views/RtcmInfoView.xaml
+++ b/Plane.FormationCreator/Views/RtcmInfoView.xaml
@@ -26,15 +26,20 @@
                         <Label  Margin="6,6,0,6" Height="28" Content="卫星数："/>
                         <Label  Margin="0,6,6,6" Height="28" Content="{Binding RtcmManager.rtcmInfoList.Count,UpdateSourceTrigger=PropertyChanged}"></Label>
                     </StackPanel>
-                    <StackPanel Margin="6,0,0,6" Orientation="Horizontal">
-                        <CheckBox x:Name="checkBox" Content="双通道发送"  
-                      Margin="4,5,5,0" Width="130" 
+                    <StackPanel Margin="6,0,0,2" Orientation="Horizontal">
+                        <CheckBox x:Name="checkBox" Content="双通道模式  (同时发到广播端口)"  
+                      Margin="4,5,5,0" Width="190" 
                         IsChecked="{Binding ResendToComMK}"/>
-                        <TextBlock Margin="0,4,0,0" Text="{Binding BoardPortsStatus}"/>
+                       
                         <CheckBox x:Name="cBsmalldata" Content="低带宽模式"  
                       Margin="20,5,5,0" Width="95" 
                         IsChecked="{Binding SmalldataMK}"/>
                     </StackPanel>
+                    <StackPanel Margin="6,0,0,2" Orientation="Horizontal">
+                        <TextBlock Margin="23,1,0,0" Text="{Binding BoardPortsStatus}"/>
+                    </StackPanel>
+
+                   
 
                 </StackPanel>