diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/bd/FocusCalculator3.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/bd/FocusCalculator3.java
index a06a40e8..32a13028 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/bd/FocusCalculator3.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/bd/FocusCalculator3.java
@@ -163,7 +163,7 @@ public class FocusCalculator3 extends FocusCalculator1{
             logger.error("error!",e);
             return null;
         }
-        return resultB562Sub();
+        return null;
     }
 
     @Override
diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/bd/FocusCalculator7.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/bd/FocusCalculator7.java
new file mode 100644
index 00000000..bbff0896
--- /dev/null
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/bd/FocusCalculator7.java
@@ -0,0 +1,36 @@
+package com.imdroid.sideslope.bd;
+
+import com.imdroid.sideslope.sal.Device;
+
+
+/**
+ * 博通：用GGA绝对坐标代替相对位置
+ */
+public class FocusCalculator7 extends FocusCalculator3{
+
+    final static long scale = 100000000L;//地球1°：111km，放大到mm乘以100,000,000
+
+    public FocusCalculator7(Device bsDevice) {
+        super(bsDevice);
+    }
+
+    @Override
+    public void addGGA(Gga gga) {
+        if(gga == null) return;
+
+        double[] xyz = new double[]{gga.getLongitude()*scale, gga.getLatitude()*scale, gga.getAltitude()*1000, gga.getQuality()};
+
+        if(gga.isFixed()) {
+            counterFixedResult++;
+            pointList.add(xyz);
+        }
+        else if(gga.getQuality() == 5) counterNoFixed++;
+        else counterNoB562 ++;
+    }
+
+    @Override
+    public int getVer() {
+        return 7;
+    }
+
+}
diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java
index 7ac6213a..1905e490 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java
@@ -79,13 +79,16 @@ public class SingleLineGNSSCalcService implements GNSSDataCalcService {
         if(device == null) return;
         GnssGroupCalc groupCalc = getGroupCalc(device.getCalcGroupId());
         if(groupCalc==null) return;
-        device.setB562AsCalc(groupCalc.getVer()!=3);
+        device.setB562AsCalc(groupCalc.getVer()!=3 && groupCalc.getVer()!=7);
 
         if(completeWhenIdle) resultOutputTimer(device, groupCalc, message.getCreateTime());
 
         //todo 创建FocusCalculator对象需获取该测站的杆长度，上一小时的Tilt平均值，上一小时的测站相对坐标融合值ekfResult
         FocusCalculator focusCalculator;
-        if(groupCalc.getVer() == 6){
+        if(groupCalc.getVer() == 7){
+            focusCalculator = calculatorMap.computeIfAbsent(deviceId,s -> new FocusCalculator7(null));
+        }
+        else if(groupCalc.getVer() == 6){
             focusCalculator = calculatorMap.computeIfAbsent(deviceId,s -> new FocusCalculator6(deviceId, 50));
         }
         else if(groupCalc.getVer() == 5){
@@ -236,7 +239,7 @@ public class SingleLineGNSSCalcService implements GNSSDataCalcService {
                 gnssCalcFilterService.calc(device, groupCalc, locationRecord, latestRpos);
             }
             else {
-                if(focusCalculator.getVer()==1 || focusCalculator.getVer()==3 || focusCalculator.getVer()==5){
+                if(focusCalculator.getVer()==1 || focusCalculator.getVer()==3 || focusCalculator.getVer()==5 || focusCalculator.getVer()==7){
                     gnssCalcFilterService.calc(device, groupCalc, locationRecord, null);
                 }
                 else {
@@ -272,7 +275,7 @@ public class SingleLineGNSSCalcService implements GNSSDataCalcService {
                     else focusCalculator.setReferPoint(b562Result);
                 }
             }
-            else if(focusCalculator.getVer()==1 || focusCalculator.getVer()==3 || focusCalculator.getVer()==5) {
+            else if(focusCalculator.getVer()==1 || focusCalculator.getVer()==3 || focusCalculator.getVer()==5 || focusCalculator.getVer()==7) {
                 focusCalculator.setReferPoint(b562Result);
             }
             else {
diff --git a/sec-beidou/src/main/resources/templates/page/table/gnss_add_group_calc.html b/sec-beidou/src/main/resources/templates/page/table/gnss_add_group_calc.html
index 902f3485..16697eea 100644
--- a/sec-beidou/src/main/resources/templates/page/table/gnss_add_group_calc.html
+++ b/sec-beidou/src/main/resources/templates/page/table/gnss_add_group_calc.html
@@ -39,6 +39,7 @@
                     <option value="4">4</option>
                     <option value="5">5</option>
                     <option value="6">6</option>
+                    <option value="7">7</option>
                 </select>
             </div>
         </div>