关于大疆御3 相对高度与绝对高度的问题

关于大疆御3 相对高度与绝对高度的问题 · 发表于2023-10-13

机型：大疆御3 Pro
飞行环境：沿海地区
问题：在沿海地区拍摄的垂直向下的照片，相对高度与绝对高度相差30多米，今天拍摄了一段视频也记录相对高度与绝对高度相差30米左右。在海边飞行这个高程差明显不对，请问该怎么校正呢？？
附飞行记录数据：
1
00:00:00,000 --> 00:00:00,033
FrameCnt: 1, DiffTime: 33ms
2023-10-13 12:56:19.418
[iso: 100] [shutter: 1/143.41] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106333] [longitude: 121.520918] [rel_alt: 47.454 abs_alt: 84.430] [gb_yaw: 73.9 gb_pitch: -90.0 gb_roll: 0.0] 

2
00:00:00,033 --> 00:00:00,066
FrameCnt: 2, DiffTime: 33ms
2023-10-13 12:56:19.453
[iso: 100] [shutter: 1/143.41] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106333] [longitude: 121.520918] [rel_alt: 47.454 abs_alt: 84.430] [gb_yaw: 73.9 gb_pitch: -90.0 gb_roll: 0.0] 

3
00:00:00,066 --> 00:00:00,099
FrameCnt: 3, DiffTime: 33ms
2023-10-13 12:56:19.472
[iso: 100] [shutter: 1/144.97] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106333] [longitude: 121.520918] [rel_alt: 47.454 abs_alt: 84.430] [gb_yaw: 73.9 gb_pitch: -90.0 gb_roll: 0.0] 

4
00:00:00,099 --> 00:00:00,133
FrameCnt: 4, DiffTime: 34ms
2023-10-13 12:56:19.508
[iso: 100] [shutter: 1/144.97] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106334] [longitude: 121.520918] [rel_alt: 47.450 abs_alt: 84.426] [gb_yaw: 73.9 gb_pitch: -90.0 gb_roll: 0.0] 

5
00:00:00,133 --> 00:00:00,166
FrameCnt: 5, DiffTime: 33ms
2023-10-13 12:56:19.541
[iso: 100] [shutter: 1/146.55] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106334] [longitude: 121.520918] [rel_alt: 47.450 abs_alt: 84.426] [gb_yaw: 73.9 gb_pitch: -90.0 gb_roll: 0.0] 

6
00:00:00,166 --> 00:00:00,199
FrameCnt: 6, DiffTime: 33ms
2023-10-13 12:56:19.572
[iso: 100] [shutter: 1/146.55] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106334] [longitude: 121.520918] [rel_alt: 47.450 abs_alt: 84.426] [gb_yaw: 73.9 gb_pitch: -89.9 gb_roll: 0.0] 

7
00:00:00,199 --> 00:00:00,233
FrameCnt: 7, DiffTime: 34ms
2023-10-13 12:56:19.606
[iso: 100] [shutter: 1/146.55] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106334] [longitude: 121.520918] [rel_alt: 47.446 abs_alt: 84.423] [gb_yaw: 73.9 gb_pitch: -89.9 gb_roll: 0.0] 

8
00:00:00,233 --> 00:00:00,266
FrameCnt: 8, DiffTime: 33ms
2023-10-13 12:56:19.641
[iso: 100] [shutter: 1/146.55] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106334] [longitude: 121.520918] [rel_alt: 47.446 abs_alt: 84.423] [gb_yaw: 73.9 gb_pitch: -89.9 gb_roll: 0.0] 

9
00:00:00,266 --> 00:00:00,299
FrameCnt: 9, DiffTime: 33ms
2023-10-13 12:56:19.673
[iso: 100] [shutter: 1/146.55] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106334] [longitude: 121.520918] [rel_alt: 47.446 abs_alt: 84.423] [gb_yaw: 73.9 gb_pitch: -89.9 gb_roll: 0.0] 

10
00:00:00,299 --> 00:00:00,333
FrameCnt: 10, DiffTime: 34ms
2023-10-13 12:56:19.706
[iso: 100] [shutter: 1/146.55] [fnum: 2.8] [ev: 0] [color_md : default] [ae_meter_md: 1] [focal_len: 24.00] [dzoom_ratio: 1.00], [latitude: 29.106334] [longitude: 121.520917] [rel_alt: 47.443 abs_alt: 84.419] [gb_yaw: 73.9 gb_pitch: -89.9 gb_roll: 0.0]

风神与蒙德 · 风神与蒙德 2023-10-13 2^#

一只小青蛙 · 一只小青蛙 DJI Mini 3 Pro 普通遥控器认证用户 2023-10-14 3^#

一点都看不懂

17联队E飞行员 · 17联队E飞行员 Air 2s认证用户 2023-10-14 4^#

会不会起飞时卫星数量不多，GPS数据误差较大，记录的起飞点绝对高度偏大。可以在空旷地再试一试。起飞等待时间长一些。待卫星数量足够多时再起飞。

安胖胖 · 安胖胖 Air 2s认证用户 2023-10-15 5^#

lymex · lymex DJI Mavic 3认证用户 2023-10-16 6^#

相对高度一般很准，我飞个20多分钟再返回误差大多只有零点几米。

绝对高度也就是海拔高度误差比较大，而是还随时变动。找个有高度的GPS app实测一下便知，误差10米附近是常事。

NorierZhang · NorierZhang DJI Mini 2认证用户 2023-10-19 7^#

30米，差不多就是民用GPS的误差了。所以，这是正常的，无需校正，也无法校正。

zaaa · zaaa DJI Mini 3 Pro 带屏遥控器认证用户 2023-10-19 8^#

应该是海边气压差大，气压计不好分辨高度（问下你是怎么知道精确高度的）

zaaa · zaaa DJI Mini 3 Pro 带屏遥控器认证用户 2023-10-19 9^#

还有一种可能是起飞点海拔比拍摄地海拔差较大

大头弥勒 · 大头弥勒认证飞友 2023-10-26 10^#

就算是专业使用的千寻RTK地面设备和千寻网络RTK服务，即使是加入了北斗服务，在固定解下拿到的高程粗差都有20多米，日常中误差都要10米往上，你指望一个气压定高会给你多高精度？