SENS_GPS_TAU

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/**
* Multi GPS Blending Time Constant
*
* Sets the longest time constant that will be applied to the calculation of GPS position and height offsets used to correct data from multiple GPS data for steady state position differences.
*
*
* @group Sensors
* @min 1.0
* @max 100.0
* @unit s
* @decimal 1
*/
PARAM_DEFINE_FLOAT(SENS_GPS_TAU, 10.0f);

参数定义位置：
/PX4-Autopilot/src/modules/sensors/vehicle_gps_position/params.c