@mytec: iter1.5.1 ready for testing

backend/app/api/routes/terrain.py

@@ -70,15 +70,18 @@ async def check_fresnel_clearance(
     rx_lat: float = Query(..., description="Receiver latitude"),
     rx_lon: float = Query(..., description="Receiver longitude"),
     rx_height: float = Query(1.5, ge=0, description="Receiver height (m)"),
-    frequency: float = Query(..., ge=100, le=6000, description="Frequency (MHz)")
+    frequency: float = Query(1800, ge=100, le=6000, description="Frequency (MHz)")
 ):
     """Calculate Fresnel zone clearance"""
-    result = await los_service.calculate_fresnel_clearance(
-        tx_lat, tx_lon, tx_height,
-        rx_lat, rx_lon, rx_height,
-        frequency
-    )
-    return result
+    try:
+        result = await los_service.calculate_fresnel_clearance(
+            tx_lat, tx_lon, tx_height,
+            rx_lat, rx_lon, rx_height,
+            frequency
+        )
+        return result
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Fresnel calculation error: {str(e)}")
 
 
 @router.get("/tiles")