ros下c++实现 geodesy utm 转gps

在ROS中，你可以使用geographic_msgs和geographic_visualization_msgs这两个软件包来实现UTM坐标系和GPS坐标系之间的转换。

首先，你需要在你的ROS工作空间中下载这两个软件包。可以使用以下命令：

cd ~/catkin_ws/src
git clone https://github.com/ros/std_msgs.git
git clone https://github.com/ros/geodesy.git
git clone https://github.com/ros-geographic-info/geographic_info.git
git clone https://github.com/ros-geographic-info/geographic_msgs.git
git clone https://github.com/ros-geographic-info/geographic_visualization_msgs.git
cd ..
catkin_make

接下来，你可以在你的代码中使用geodesy软件包提供的UTMPoint和fromMsg函数来实现UTM坐标系到GPS坐标系的转换。下面是一个简单的例子：

#include <ros/ros.h>
#include <geodesy/utm.h>
#include <geodesy/wgs84.h>

int main(int argc, char** argv)
{
    ros::init(argc, argv, "utm_to_gps");
    ros::NodeHandle nh;

    // 创建UTM点
    geodesy::UTMPoint utm_point;
    utm_point.easting = 500000.0;  // UTM东向坐标
    utm_point.northing = 4500000.0;  // UTM北向坐标
    utm_point.zone = 10;  // UTM区域
    utm_point.band = 'S';  // UTM带

    // 将UTM点转换为GPS点
    geodesy::WGS84Point gps_point;
    geodesy::fromMsg(utm_point, gps_point);

    // 打印GPS坐标
    ROS_INFO("Latitude: %f", gps_point.latitude);
    ROS_INFO("Longitude: %f", gps_point.longitude);
    ROS_INFO("Altitude: %f", gps_point.altitude);

    return 0;
}

要编译这个程序，你需要将其添加到你的ROS工作空间中，并在CMakeLists.txt文件中添加以下行：

find_package(catkin REQUIRED COMPONENTS
  roscpp
  geodesy
)

catkin_package(
  CATKIN_DEPENDS roscpp geodesy
)

include_directories(
  ${catkin_INCLUDE_DIRS}
)

add_executable(utm_to_gps src/utm_to_gps.cpp)
target_link_libraries(utm_to_gps ${catkin_LIBRARIES})

然后，你可以使用以下命令编译和运行程序：

cd ~/catkin_ws
catkin_make
source devel/setup.bash
rosrun your_package_name utm_to_gps

程序将打印出转换后的GPS坐标