PSDK 气压计高度数据是否会受GPS影响？
/*!
* @brief Provides aircraft's pressure altitude from sea level using the ICAO model @ up to 200Hz
* @details
* This is a filetered output from the barometer without any further fusion.
*
* The ICAO model gives an MSL altitude of 1013.25mBar at 15° C and a temperature lapse rate of -6.5° C
* per 1000m. In your case, it may be possible that the take off altitude of the aircraft is recording a higher pressure
* than 1013.25mBar. Let's take an example - a weather station shows that SFO (San Francisco International Airport) had
* recently recorded a pressure of 1027.1mBar. SFO is 4m above MSL, yet, if you calculate the Pressure Altitude using
* the ICAO model, it relates to -114m. You can use an online calculator to similarly calculate the Pressure Altitude
* in your area.
*
* Another factor that may affect your altitude reading is manufacturing differences in the barometer - it is not
* uncommon to have a variation of ±30m readings at the same physical location with two different aircraft. For a given
* aircraft, these readings will be consistent, so you will need to calibrate the offset of your system if your code
* relies on the accuracy of the absolute value of altitude.
* @sensors GPS, Barometer, IMU
* @units m
* @datastruct \ref T_DjiFcSubscriptionAltitudeBarometer
*/
DJI_FC_SUBSCRIPTION_TOPIC_ALTITUDE_BAROMETER = DJI_DATA_SUBSCRIPTION_TOPIC(DJI_DATA_SUBSCRIPTION_MODULE_FC, 8),
是不是说明PSDK中气压计高度数据还融合了GPS和IMU，不是纯粹的气压计高度数据。当GPS信号受到遮挡，高度不准是不是也会影响这个数据的准确性？
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