diff --git a/src/data/GprVolumeRepository.cpp b/src/data/GprVolumeRepository.cpp
index a1b1277..b256969 100644
--- a/src/data/GprVolumeRepository.cpp
+++ b/src/data/GprVolumeRepository.cpp
@@ -5,6 +5,7 @@
 
 #include "core/model/ScalarVolumeI16.hpp"
 #include "io/gpr/Gpr3dvVolumeBridge.hpp"
+#include "io/gpr/NormalizedRadarVolumeBridge.hpp"
 
 namespace geopro::data {
 
@@ -47,4 +48,15 @@ VolumeGrid createGprVolumeGrid(const std::string& lineDir,
   return builtI16ToVolumeGrid(built);
 }
 
+VolumeGrid createRadarVolumeGrid(const std::string& lineDir,
+                                 const std::string& linePrefix, int coarse,
+                                 double targetDy) {
+  // 走规范化测线链(io::gpr) 读 .head/.data → int16 量化体 → 反量化为 app 的 float 体。
+  // 与 createGprVolumeGrid 同适配器(builtI16ToVolumeGrid)，仅上游数据源不同。
+  const geopro::core::BuiltI16 built =
+      geopro::io::gpr::buildLineVolumeFromNormalized(lineDir, linePrefix, coarse,
+                                                     targetDy);
+  return builtI16ToVolumeGrid(built);
+}
+
 }  // namespace geopro::data
diff --git a/src/data/GprVolumeRepository.hpp b/src/data/GprVolumeRepository.hpp
index 59f7ff8..0f576d1 100644
--- a/src/data/GprVolumeRepository.hpp
+++ b/src/data/GprVolumeRepository.hpp
@@ -33,6 +33,17 @@ VolumeGrid createGprVolumeGrid(const std::string& lineDir,
                               const std::string& linePrefix, int coarse = 4,
                               double targetDy = 0.025);
 
+// 走【规范化测线链】(io::gpr::buildLineVolumeFromNormalized) 建逐线雷达体并适配
+// 成 app 的 VolumeGrid。读 {lineDir}/{linePrefix}.head + .data(轴 X=道/Y=通道/
+// Z=采样)→ BuiltI16(int16+Quant) → builtI16ToVolumeGrid 反量化 → VolumeGrid。
+//   与 createGprVolumeGrid(P1/P2 链)同输出格式，下游 addVolume 无需改动；区别仅是
+//   上游数据源走规范化 .head/.data 而非 .iprh/.iprb。
+//   coarse(≥1)沿测线下采样；targetDy(米，>0 启用)线内通道插值(读 .head CH_X_OFFSETS)。
+//   失败(加载失败/解析失败)→ 抛 std::runtime_error(由 io::gpr 链抛出，原样透传)。
+VolumeGrid createRadarVolumeGrid(const std::string& lineDir,
+                                 const std::string& linePrefix, int coarse = 4,
+                                 double targetDy = 0.025);
+
 }  // namespace geopro::data
 
 #endif  // GEOPRO_DATA_GPRVOLUMEREPOSITORY_HPP
diff --git a/tests/data/test_gpr_volume_repository.cpp b/tests/data/test_gpr_volume_repository.cpp
index 58b8006..a2e05e7 100644
--- a/tests/data/test_gpr_volume_repository.cpp
+++ b/tests/data/test_gpr_volume_repository.cpp
@@ -153,4 +153,24 @@ TEST_F(GprVolumeRepositoryChainTest, ThrowsOnMissingLine) {
                std::runtime_error);
 }
 
+// 规范化链(.head/.data → buildLineVolumeFromNormalized → 反量化)产 VolumeGrid。
+// 合成同 Task 5 桥接测试：SAMPLES=3/NUMBER_OF_CH=2/LAST_TRACE=8 → X=道(4 段)、
+// Y=通道(2)、Z=采样(3)；coarse=1/targetDy=0 关下采样与通道插值，维度直读。
+TEST(GprVolumeRepository, CreateRadarVolumeGridFromNormalized) {
+  fs::path dir = fs::temp_directory_path() / "radar_repo_test";
+  fs::create_directories(dir);
+  { std::ofstream f(dir / "L.head");
+    f << "SAMPLES:3\nNUMBER_OF_CH:2\nLAST_TRACE:8\nBITS:16\nENDIAN_TYPE:1\n"
+         "DISTANCE_INTERVAL:0.1\nTIMEWINDOW:30\nDIELECTRIC:9\n"; }
+  { std::ofstream f(dir / "L.data", std::ios::binary);
+    for (int t = 0; t < 4; ++t) for (int c = 0; c < 2; ++c) for (int s = 0; s < 3; ++s) {
+      std::int16_t v = static_cast<std::int16_t>(t * 10 + c * 100 + s);
+      f.write(reinterpret_cast<const char*>(&v), 2); } }
+  const auto grid = geopro::data::createRadarVolumeGrid(dir.string(), "L", 1, 0.0);
+  EXPECT_EQ(grid.vol.nx(), 4);
+  EXPECT_EQ(grid.vol.ny(), 2);
+  EXPECT_EQ(grid.vol.nz(), 3);
+  EXPECT_GT(grid.vmax, grid.vmin);
+}
+
 }  // namespace