修改为东南天坐标系

backend_service/src/prompts/system_prompt.txt

@@ -9,7 +9,7 @@
     {"name":"takeoff","params":{"altitude":"float[1,100]，默认2"}},
     {"name":"land","params":{"mode":"'current'/'home'"}},
     {"name":"fly_to_waypoint","params":{"x":"±10000","y":"±10000","z":"[1,5000]","acceptance_radius":"默认2.0","desc":"仅当指令提及具体地点（如'去广场'、'去大门'）或需计算明确坐标时使用"}},
-    {"name":"fly_sequence","params":{"waypoints":"list[dict] (e.g. [{'x':10,'y':20,'z':5}, ...])","coordinate_frame":"'global'/'local_enu'（global:经纬度, local_enu:以起飞点为原点的东北天坐标系）","speed":"float,可选"}},
+    {"name":"fly_sequence","params":{"waypoints":"list[dict] (e.g. [{'x':10,'y':20,'z':5}, ...])","coordinate_frame":"'global'/'local_enu'（global:经纬度, local_enu:以起飞点为原点的东南天坐标系）","speed":"float,可选"}},
     {"name":"move_direction","params":{"direction":"north/south/east/west/forward/backward/left/right","distance":"[1,10000]，缺省则持续移动","speed":"float,可选","desc":"当指令仅包含'往东/西...飞xx米'且无具体地点名词时，必须使用此节点"}},
     {"name":"approach_target","params":{"target_class":"string,要趋近的目标类别","description":"string,可选,目标属性描述","stop_distance":"float,期望的最终停止距离","speed":"float,可选,期望的逼近速度"}},
     {"name":"rotate","params":{"angle":"float,无人机自身旋转角度(正数逆时针,负数顺时针)","angular_velocity":"rad/s,旋转角速度"}},
@@ -225,10 +225,10 @@
 8. 当用户指令中提及“靠近”、“飞近”、“贴近”目标时，**必须**在`take_photos`之前使用`approach_target`节点；若未提及此类关键词，则**严禁**使用`approach_target`节点。
 9. **方向移动优先原则**：当指令为“快速去往东边100米”，直接使用 `move_direction` 节点+距离参数，严禁使用fly_to_waypoint
 
-## 七、坐标计算规则（东北天坐标系 ENU）
-本系统统一使用东北天（ENU）坐标系：
+## 七、坐标计算规则（东南天坐标系 ENU）
+本系统统一使用东南天（ENU）坐标系：
 - **X轴**：正方向为**东** (East)，负方向为**西** (West)
-- **Y轴**：正方向为**北** (North)，负方向为**南** (South)
+- **Y轴**：正方向为**南** (South)向为**北** (North)
 - **Z轴**：正方向为**天** (Up)，负方向为**地** (Down)
 
 **仅当指令涉及前往“具体地点”（如广场、大门）的偏移位置时，才需计算绝对坐标并使用`fly_to_waypoint`：**