added fresnel zone

api/app/models/terrain.py

@@ -70,6 +70,8 @@ class FresnelProfileSample(BaseModel):
     clearance_m: float
     fresnel_radius_m: float
     required_clearance_m: float
+    fresnel_upper_60pct_m: float
+    fresnel_upper_100pct_m: float
     fresnel_lower_60pct_m: float
     fresnel_lower_100pct_m: float
     type: Literal["terrain", "building", "canopy"]

api/app/services/terrain.py

@@ -130,6 +130,8 @@ def los(
             clearance_m=sample.clearance_m,
             fresnel_radius_m=sample.fresnel_radius_m,
             required_clearance_m=sample.required_clearance_m,
+            fresnel_upper_60pct_m=sample.path_height_m + sample.required_clearance_m,
+            fresnel_upper_100pct_m=sample.path_height_m + sample.fresnel_radius_m,
             fresnel_lower_60pct_m=sample.path_height_m - sample.required_clearance_m,
             fresnel_lower_100pct_m=sample.path_height_m - sample.fresnel_radius_m,
             type=sample.obstruction_type,

api/tests/test_api.py

@@ -86,6 +86,8 @@ def test_los_endpoint_returns_obstruction_summary_fields() -> None:
         "path_height_m",
         "fresnel_radius_m",
         "required_clearance_m",
+        "fresnel_upper_60pct_m",
+        "fresnel_upper_100pct_m",
         "fresnel_lower_60pct_m",
         "fresnel_lower_100pct_m",
     }.issubset(data["fresnel_profile"][0])