Patent ID: 11953917
Assignee: SHENZHEN SIYUFEI TECHNOLOGY CO., LTD.
Field: Control (Instruments)
Classification: CPC G  B  Y | IPC B  G

Claim 1:
2. The launching method according to claim 1, wherein obtaining the new geomagnetic triaxial extreme value data by comparing the geomagnetic triaxial data at the current moment with the previous geomagnetic triaxial extreme value data comprises:
obtaining a geomagnetic triaxial extreme value deviation by calculating an absolute difference between the geomagnetic triaxial data at the current moment and the previous geomagnetic triaxial extreme value data;
comparing geomagnetic triaxial extreme value deviation with a preset reasonable deviation value of the geomagnetic triaxial extreme value, if the geomagnetic triaxial extreme value deviation is greater than the preset reasonable deviation value of the geomagnetic triaxial extreme value, taking the previous geomagnetic triaxial extreme value data as the new geomagnetic triaxial extreme value data, if the geomagnetic triaxial extreme value is less than or equal to the preset reasonable deviation of the geomagnetic triaxial extreme value, following steps are executed:
comparing the geomagnetic triaxial data at the current moment with the previous geomagnetic triaxial extreme value data according to following formulas:

X axis maximum value: if Xn>Xmax and |Xn−Xmax|<Xthreshold;

Then Xmax=Xn, otherwise, Xmax=Xmax;

X axis minimum value: if Xn<Xmin and |Xn−Xmin|<Xthreshold;

Then Xmin=Xn, otherwise, Xmin=Xmin;

Y axis maximum value: if Yn>Ymax and |Yn−Ymax|<Ythreshold;

Then Ymax=Yn, otherwise, Ymax=Ymax;

Y axis minimum value: if n<Ymin and |Yn−Ymin|Ythreshold;

Then Ymin=Yn, otherwise, Ymin=Ymin;

Z axis maximum value: If Zn>Zmax and |Zn−Zmax|<Zthreshold;

Then Zmax=Zn, otherwise, Zmax=Zmax;

Z-axis minimum value: if Zn<Zmin and |Zn−Zmin|<Zthreshold;

Then Zmin=Zn, otherwise, Zmin=Zmin;
Xn, Yn, and Zn represent the geomagnetic triaxial data at the current moment in X-axis direction, Y-axis direction, and Z-axis direction, respectively, Xmax, Ymax, and Zmax represent maximum values of geomagnetic triaxial extreme values data in the X-axis direction, Y-axis direction, and Z-axis direction, respectively, Xmin, Ymin, and Zmin represent minimum values of the geomagnetic triaxial extreme values data in the X-axis, Y-axis, and Z-axis directions, respectively, the geomagnetic triaxial correction parameters comprise magnetic field correction factors and axial value offsets, Xthreshold, Ythreshold, and Zthreshold represent the geomagnetic triaxial extreme value deviation in the X-axis direction, Y-axis direction, and Z-axis direction, respectively.