非常感谢作者的代码,我可以正常输出GPFPD数据,但是其中的航向角一直为0,请问一下作者知道是为什么吗?
[11:54:26:565] $GPFPD,2214,273284.350,0.000,-1.808,5.900,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,0041␍␊
[11:54:26:565] $GPFPD,2214,273284.360,0.000,1.031,7.888,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,006E␍␊
[11:54:26:627] $GPFPD,2214,273284.370,0.000,2.098,7.780,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,0068␍␊
[11:54:26:627] $GPFPD,2214,273284.380,0.000,-0.314,5.792,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,004E␍␊
[11:54:26:657] $GPFPD,2214,273284.390,0.000,2.679,9.309,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,0064␍␊
[11:54:26:657] $GPFPD,2214,273284.400,0.000,2.575,7.359,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,006E␍␊
[11:54:26:657] $GPFPD,2214,273284.410,0.000,-0.113,5.903,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,0043␍␊
[11:54:26:657] $GPFPD,2214,273284.420,0.000,1.940,10.373,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,005B␍␊
[11:54:26:657] $GPFPD,2214,273284.430,0.000,1.865,10.802,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,0051␍␊
[11:54:26:739] $GPFPD,2214,273284.440,0.000,-0.814,8.476,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,004A␍␊
[11:54:26:739] $GPFPD,2214,273284.450,0.000,1.212,9.218,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,0064␍␊
[11:54:26:739] $GPFPD,2214,273284.460,0.000,-0.100,10.935,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,0077␍␊
[11:54:26:739] $GPFPD,2214,273284.470,0.000,-2.141,7.805,30.51606274,114.41241630,56.97,-1.604,-0.862,-3.532,0.000,0,0,00*45␍␊