diff --git a/src/app/main.cpp b/src/app/main.cpp
index ab05640..a635429 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -52,7 +52,6 @@
 #include <QJsonObject>
 #include <QLibraryInfo>
 #include <QMenu>
-#include <QMenuBar>
 #include <QMessageBox>
 #include <QPoint>
 #include <QSet>
@@ -981,36 +980,33 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
                              analysisTab->scrollItemToTop(qid);  // 新三维体行尽量滚到分析栏顶部
                          });
                      });
-    // 本地导入三维雷达测线目录(后端未就绪的过渡入口)：选目录+前缀 → registerRadarDataset(登记dd_radar_3d DS) → 勾选→后台建体渲染。
-    {
-        QMenu* radarMenu = window.menuBar()->addMenu(QStringLiteral("三维雷达"));
-        QAction* importAct = radarMenu->addAction(QStringLiteral("导入测线目录(本地)…"));
-        QObject::connect(importAct, &QAction::triggered, &window,
-                         [&window, scene3dRepo, refreshAnalysis, analysisTab]() {
-            const QString dir = QFileDialog::getExistingDirectory(
-                &window, QStringLiteral("选择规范化三维雷达测线目录(含 *.head/*.data)"));
-            if (dir.isEmpty()) return;
-            bool ok = false;
-            const QString prefix = QInputDialog::getText(
-                &window, QStringLiteral("测线前缀"),
-                QStringLiteral("输入测线前缀(如 南同大道_000)："), QLineEdit::Normal, QString(), &ok);
-            if (!ok || prefix.isEmpty()) return;
-            // structParentId 暂空(P0 挂三维体段根；P1 接 TM 归属)。
-            const std::string newId = scene3dRepo->registerRadarDataset(
-                dir.toLocal8Bit().toStdString(), prefix.toLocal8Bit().toStdString(),
-                prefix.toStdString(), /*structParentId=*/std::string(), /*coarse=*/4);
-            { const QSignalBlocker block(analysisTab); refreshAnalysis(); }  // DS 进三维体段(不触发渲染)
-            const QString qid = QString::fromStdString(newId);
-            analysisTab->setItemChecked(qid, true);   // 勾选 → addDatasetAsync → loadVolume 后台建体渲染
-            analysisTab->setItemBusy(qid, true);       // spinner; 渲染完成由 datasetRendered 撤(main.cpp:987)
-            analysisTab->scrollItemToTop(qid);
-        });
-        // 明星路 Impulse(.iprb) 本地导入：复用现成 createGprVolume(eager 同步建体，预填 cachedGrid)。
-        //   双数据集互证：证下游渲染/切片/异常对 14ch(Impulse)/16ch(Mala) 几何无关。
-        QAction* importImpulseAct =
-            radarMenu->addAction(QStringLiteral("导入Impulse测线目录(.iprb)…"));
-        QObject::connect(importImpulseAct, &QAction::triggered, &window,
-                         [&window, scene3dRepo, refreshAnalysis, analysisTab, vtkLoading]() {
+    // 本地导入三维雷达测线(后端未就绪的过渡入口)：入口=三维体段头「+ 导入雷达测线」按钮(CategorySection)
+    //   → analysisTab.radarImportRequested(impulse)。app 无原生菜单栏(menuBar 被 TopBar 经 setMenuWidget 占用),
+    //   故入口放可见的段头按钮。impulse=false 走规范化(.head/.data, 懒加载后台建体)；true 走 Impulse(.iprb, eager)。
+    QObject::connect(
+        analysisTab, &geopro::app::CategoryAnalysisTab::radarImportRequested, &window,
+        [&window, scene3dRepo, refreshAnalysis, analysisTab, vtkLoading](bool impulse) {
+            if (!impulse) {  // 规范化 .head/.data → registerRadarDataset(dd_radar_3d, 懒加载后台建体)
+                const QString dir = QFileDialog::getExistingDirectory(
+                    &window, QStringLiteral("选择规范化三维雷达测线目录(含 *.head/*.data)"));
+                if (dir.isEmpty()) return;
+                bool ok = false;
+                const QString prefix = QInputDialog::getText(
+                    &window, QStringLiteral("测线前缀"),
+                    QStringLiteral("输入测线前缀(如 南同大道_000)："), QLineEdit::Normal, QString(), &ok);
+                if (!ok || prefix.isEmpty()) return;
+                // structParentId 暂空(P0 挂三维体段根；P1 接 TM 归属)。
+                const std::string newId = scene3dRepo->registerRadarDataset(
+                    dir.toLocal8Bit().toStdString(), prefix.toLocal8Bit().toStdString(),
+                    prefix.toStdString(), /*structParentId=*/std::string(), /*coarse=*/4);
+                { const QSignalBlocker block(analysisTab); refreshAnalysis(); }  // DS 进三维体段(不触发渲染)
+                const QString qid = QString::fromStdString(newId);
+                analysisTab->setItemChecked(qid, true);  // 勾选 → addDatasetAsync → loadVolume 后台建体渲染
+                analysisTab->setItemBusy(qid, true);      // spinner; 渲染完成由 datasetRendered 撤
+                analysisTab->scrollItemToTop(qid);
+                return;
+            }
+            // 明星路 Impulse(.iprb)：复用现成 createGprVolume(eager 同步建体，预填 cachedGrid)。双数据集互证下游几何无关。
             const QString dir = QFileDialog::getExistingDirectory(
                 &window, QStringLiteral("选择 Impulse 测线目录(含 *.iprb/*.ord)"));
             if (dir.isEmpty()) return;
@@ -1037,12 +1033,11 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
                 vtkLoading->hide();
                 const QString qid = QString::fromStdString(newId);
                 // createGprVolume 预填 cachedGrid → setItemChecked 内 loadVolume 同步渲染、datasetRendered 自动撤 busy；
-                //   故此处【不要】再 setItemBusy(true)（否则 spinner 永久转圈 —— 评审 MEDIUM）。
+                //   故此处【不要】再 setItemBusy(true)（否则 spinner 永久转圈）。
                 analysisTab->setItemChecked(qid, true);
                 analysisTab->scrollItemToTop(qid);
             });
         });
-    }
     // 任一数据集（剖面/体）异步加载开始 → 列表项复选框转等待 spinner；渲染完成 → 复原复选框。
     //   覆盖非三维体：勾选剖面首次渲染较慢时也有等待反馈（用户反馈）。
     QObject::connect(sceneCtrl, &geopro::controller::VtkSceneController::datasetLoading, analysisTab,
diff --git a/src/app/panels/columns/CategoryAnalysisTab.cpp b/src/app/panels/columns/CategoryAnalysisTab.cpp
index 7f5959c..63a1740 100644
--- a/src/app/panels/columns/CategoryAnalysisTab.cpp
+++ b/src/app/panels/columns/CategoryAnalysisTab.cpp
@@ -47,6 +47,8 @@ CategoryAnalysisTab::CategoryAnalysisTab(geopro::data::DatasetFieldDictionary* d
                 });
         connect(sec, &CategorySection::generateVolumeRequested, this,
                 &CategoryAnalysisTab::generateVolumeRequested);
+        connect(sec, &CategorySection::radarImportRequested, this,
+                &CategoryAnalysisTab::radarImportRequested);
         connect(sec, &CategorySection::detailRequested, this, &CategoryAnalysisTab::detailRequested);
         connect(sec, &CategorySection::deleteDatasetRequested, this,
                 &CategoryAnalysisTab::deleteDatasetRequested);
diff --git a/src/app/panels/columns/CategoryAnalysisTab.hpp b/src/app/panels/columns/CategoryAnalysisTab.hpp
index 2f927d0..a47120a 100644
--- a/src/app/panels/columns/CategoryAnalysisTab.hpp
+++ b/src/app/panels/columns/CategoryAnalysisTab.hpp
@@ -39,6 +39,7 @@ public:
 signals:
     void checkedDatasetsChanged(const QStringList& dsIds);  // 5 段勾选并集
     void generateVolumeRequested(const QString& dsTypeCode, const QStringList& sourceDsIds);
+    void radarImportRequested(bool impulse);  // 三维体段头「+导入雷达测线」(false=规范化, true=Impulse)
     void detailRequested(const QString& dsId, const QString& ddCode, const QString& name);
     void deleteDatasetRequested(const QString& dsId, const QString& ddCode);  // 右键删除切片/异常
     // ── 三维体段操作转发（迁自旧 Column3DAnalysis，全接）──
diff --git a/src/app/panels/columns/CategorySection.cpp b/src/app/panels/columns/CategorySection.cpp
index d79f68a..ceaa57f 100644
--- a/src/app/panels/columns/CategorySection.cpp
+++ b/src/app/panels/columns/CategorySection.cpp
@@ -83,6 +83,32 @@ CategorySection::CategorySection(const CategorySpec& spec, geopro::data::Dataset
         });
         hl->addWidget(gen);
     }
+    // 三维体段头「+ 导入雷达测线」(后端未就绪的本地过渡入口)：弹出菜单选 规范化/Impulse。
+    //   次级强调按钮样式同「+新增三维体」；点击发 radarImportRequested(impulse) → 上层走导入流程。
+    if (spec_.id == "voxel") {
+        auto* imp = new QToolButton(headerRow);
+        imp->setText(QStringLiteral("+ 导入雷达测线"));
+        imp->setCursor(Qt::PointingHandCursor);
+        imp->setPopupMode(QToolButton::InstantPopup);
+        applyTokenizedStyleSheet(
+            imp, QStringLiteral(
+                     "QToolButton{border:1px solid {{accent/primary}};border-radius:%1px;"
+                     "color:{{accent/primary}};background:transparent;padding:%2px %3px;font-size:%4px;}"
+                     "QToolButton::menu-indicator{image:none;width:0;}"
+                     "QToolButton:hover{background:{{bg/selected}};}"
+                     "QToolButton:pressed{background:{{bg/hover}};}")
+                     .arg(radius::kSm)
+                     .arg(scaledPx(space::kXxs))
+                     .arg(scaledPx(space::kMd))
+                     .arg(scaledPx(type::kCaption)));
+        auto* menu = new QMenu(imp);
+        menu->addAction(QStringLiteral("规范化测线目录(.head/.data)…"), this,
+                        [this] { emit radarImportRequested(false); });
+        menu->addAction(QStringLiteral("Impulse 测线目录(.iprb)…"), this,
+                        [this] { emit radarImportRequested(true); });
+        imp->setMenu(menu);
+        hl->addWidget(imp);
+    }
     root->addWidget(headerRow);
 
     body_ = new QWidget(this);
diff --git a/src/app/panels/columns/CategorySection.hpp b/src/app/panels/columns/CategorySection.hpp
index 4de7528..86a0d97 100644
--- a/src/app/panels/columns/CategorySection.hpp
+++ b/src/app/panels/columns/CategorySection.hpp
@@ -51,6 +51,7 @@ signals:
     void checkedDatasetsChanged(const QStringList& dsIds);                                  // 数据行勾选=渲染
     void collapsedChanged();  // 折叠/展开切换 → 外层 CategoryAnalysisTab 重排各段 stretch
     void generateVolumeRequested(const QString& dsTypeCode, const QStringList& sourceDsIds);  // 段头「+新增三维体」
+    void radarImportRequested(bool impulse);  // 三维体段头「+导入雷达测线」(false=规范化 .head/.data, true=Impulse .iprb)
     void detailRequested(const QString& dsId, const QString& ddCode, const QString& name);  // 双击/右键=详情
     void deleteDatasetRequested(const QString& dsId, const QString& ddCode);                // 右键删除（切片/异常）
     // ── 三维体段右键操作（迁自旧 Column3DAnalysis，全接）──