diff --git a/data/default_fireunits.json b/data/default_fireunits.json
index 863ba9b..ddbf0cc 100644
--- a/data/default_fireunits.json
+++ b/data/default_fireunits.json
@@ -14,6 +14,21 @@
     "EORange": 8000.0,
     "IRRange": 5000.0
   },
+  {
+    "Id": "ground-light",
+    "Name": "轻型地基火力单元",
+    "PlatformType": 1,
+    "GunCount": 2,
+    "ChannelsPerGun": 4,
+    "ChannelInterval": 1.0,
+    "Cooldown": 5.0,
+    "AmmoChangeTime": 30.0,
+    "MuzzleVelocity": 800.0,
+    "AmmoTypes": [0, 1],
+    "RadarRange": 10000.0,
+    "EORange": 6000.0,
+    "IRRange": 3000.0
+  },
   {
     "Id": "ground-heavy",
     "Name": "重型地基火力单元",
diff --git a/src/CounterDrone.Core/DefaultFireUnits.cs b/src/CounterDrone.Core/DefaultFireUnits.cs
index a41b504..cc9cdbf 100644
--- a/src/CounterDrone.Core/DefaultFireUnits.cs
+++ b/src/CounterDrone.Core/DefaultFireUnits.cs
@@ -13,6 +13,22 @@ namespace CounterDrone.Core
             if (_cache != null) return _cache;
             _cache = new List<FireUnitTemplate>
             {
+                new FireUnitTemplate
+                {
+                    Id = "ground-light",
+                    Name = "轻型地基火力单元",
+                    PlatformType = 1,
+                    GunCount = 2,
+                    ChannelsPerGun = 4,
+                    ChannelInterval = 1.0,
+                    Cooldown = 5.0,
+                    AmmoChangeTime = 30.0,
+                    MuzzleVelocity = 800.0,
+                    AmmoTypes = new() { 0, 1 },
+                    RadarRange = 10000.0,
+                    EORange = 6000.0,
+                    IRRange = 3000.0,
+                },
                 new FireUnitTemplate
                 {
                     Id = "ground-standard",
diff --git a/src/Unity/Assets/Plugins/CounterDrone.Core/CounterDrone.Core.dll b/src/Unity/Assets/Plugins/CounterDrone.Core/CounterDrone.Core.dll
index 2506860..2c57d78 100644
Binary files a/src/Unity/Assets/Plugins/CounterDrone.Core/CounterDrone.Core.dll and b/src/Unity/Assets/Plugins/CounterDrone.Core/CounterDrone.Core.dll differ
diff --git a/test/unit/CounterDrone.Core.Tests/FullPipelineTests.cs b/test/unit/CounterDrone.Core.Tests/FullPipelineTests.cs
index 18ea100..9546dc0 100644
--- a/test/unit/CounterDrone.Core.Tests/FullPipelineTests.cs
+++ b/test/unit/CounterDrone.Core.Tests/FullPipelineTests.cs
@@ -197,7 +197,7 @@ namespace CounterDrone.Core.Tests
                 });
             _scenario.SaveDeployment(_taskId, new List<EquipmentDeployment>
             {
-                MakeEquipment(DefaultFireUnits.GetById("ground-standard"), AerosolType.InertGas, 1, 5000, 0, 50),
+                MakeEquipment(DefaultFireUnits.GetById("ground-light"), AerosolType.InertGas, 2, 5000, 0, 50),
             });
             _scenario.SaveCloudDispersal(_taskId, new CloudDispersal { AerosolType = (int)AerosolType.InertGas, DisperseHeight = 500 });