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一张图看懂激光雷达:从三维测绘到自动驾驶

  • 2026-05-12 09:32:34
一张图看懂激光雷达:从三维测绘到自动驾驶

一张图看懂激光雷达：从三维测绘到自动驾驶

激光雷达（LiDAR）是一种主动式三维感知技术，通过发射激光脉冲并接收目标回波，计算光束往返时间，从而获取目标的距离、位置和空间结构信息。其核心数据形式是三维点云，可精细刻画地形、建筑、植被、道路和目标轮廓，广泛应用于三维测绘、自动驾驶、城市建模、林业监测、电力巡检和遥感观测等领域。

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  1. CONNECT:[ UseTime:0.000795s ] mysql:host=127.0.0.1;port=3306;dbname=e_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.002024s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.024025s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.006473s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001304s ]
  6. SELECT * FROM `set` [ RunTime:0.002149s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001338s ]
  8. SELECT * FROM `article` WHERE `id` = 504371 LIMIT 1 [ RunTime:0.000812s ]
  9. UPDATE `article` SET `lasttime` = 1778556088 WHERE `id` = 504371 [ RunTime:0.012886s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.012969s ]
  11. SELECT * FROM `article` WHERE `id` < 504371 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.036608s ]
  12. SELECT * FROM `article` WHERE `id` > 504371 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002158s ]
  13. SELECT * FROM `article` WHERE `id` < 504371 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004848s ]
  14. SELECT * FROM `article` WHERE `id` < 504371 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002492s ]
  15. SELECT * FROM `article` WHERE `id` < 504371 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007022s ]
0.267461s