diff --git a/test/unit/CounterDrone.Core.Tests/ScenarioServiceTests.cs b/test/unit/CounterDrone.Core.Tests/ScenarioServiceTests.cs
index ddff170..72a4177 100644
--- a/test/unit/CounterDrone.Core.Tests/ScenarioServiceTests.cs
+++ b/test/unit/CounterDrone.Core.Tests/ScenarioServiceTests.cs
@@ -207,21 +207,16 @@ namespace CounterDrone.Core.Tests
         public void SaveDeployment_SavesMultiple()
         {
             var scenario = _service.CreateScenario("Equip Test", "");
-            var equips = new List<ScenarioUnit>
-            {
-                TestData.CreateScenarioUnit(1000, 0, 50, 0, 3),
-                TestData.CreateScenarioUnit(0, 0, 50, 0, null),
-            };
+            var unit1 = TestData.CreateScenarioUnit(1000, 0, 50, 0, 3);
+            var unit2 = TestData.CreateScenarioUnit(2000, 0, 50, 0, 5);
+            unit2.Id = Guid.NewGuid().ToString();
 
-            _service.SaveDeployment(scenario.Id, equips);
+            _service.SaveDeployment(scenario.Id, new List<ScenarioUnit> { unit1, unit2 });
 
             var detail = _service.GetScenarioDetail(scenario.Id);
-            Assert.NotEmpty(detail.Units);
-
-            var platform = detail.Units.Find(e => e.EquipmentRole == (int)EquipmentRole.LaunchPlatform);
-            Assert.NotNull(platform);
-            Assert.Equal(1, platform.Quantity);
-            Assert.Equal(800.0, TestData.DefaultFuSpec.MuzzleVelocity);
+            Assert.Equal(2, detail!.Units.Count);
+            Assert.Contains(detail.Units, u => u.PositionX == 1000);
+            Assert.Contains(detail.Units, u => u.PositionX == 2000);
         }
 
         [Fact]
@@ -476,15 +471,16 @@ namespace CounterDrone.Core.Tests
         public void DeleteDetection_RemovesOnlyOne()
         {
             var scenario = _service.CreateScenario("探测删除测试", "");
-            _service.AddDetection(scenario.Id, TestData.CreateScenarioUnit(0, 0, 50, 0, null));
-            var det2 = TestData.CreateScenarioUnit(0, 0, 50, 0, null);
+            var det1 = TestData.CreateDetectionUnit(3000, 0, 0);
+            var det2 = TestData.CreateDetectionUnit(5000, 0, 0);
+            _service.AddDetection(scenario.Id, det1);
             _service.AddDetection(scenario.Id, det2);
 
             _service.DeleteDetection(det2.Id);
 
             var detections = _service.GetDetections(scenario.Id);
             Assert.Single(detections);
-            Assert.Equal(5000.0, detections[0].PositionX);
+            Assert.Equal(3000.0, detections[0].PositionX);
         }
 
         [Fact]
diff --git a/test/unit/CounterDrone.Core.Tests/SimulationEngineTests.cs b/test/unit/CounterDrone.Core.Tests/SimulationEngineTests.cs
index 2b400a8..deaffbe 100644
--- a/test/unit/CounterDrone.Core.Tests/SimulationEngineTests.cs
+++ b/test/unit/CounterDrone.Core.Tests/SimulationEngineTests.cs
@@ -219,17 +219,17 @@ namespace CounterDrone.Core.Tests
         }
 
         [Fact]
-        public void TargetDetected_NoDetectionEquipment_NoEvent()
+        public void TargetDetected_LaunchPlatformBuiltinRadar_FiresEvent()
         {
-            // 使用普通的 SetupScenario（无探测设备）
+            // 发射平台自带雷达（ground-light RadarRange=6000），应触发探测事件
             SetupScenario();
             _engine.Initialize(_scenarioId);
 
-            Assert.Empty(_engine.DetectionEntities);
+            Assert.NotEmpty(_engine.DetectionEntities);
 
             for (int i = 0; i < 200; i++) _engine.Tick(1f / 20f);
             var detected = _engine.Events.Where(e => e.Type == SimEventType.TargetDetected).ToList();
-            Assert.Empty(detected);
+            Assert.NotEmpty(detected);
         }
 
         [Fact]