Hi everyone! I am new to my APM 2.6 and have been doing some simple flights with an Ansley Peace Drone to learn my way around the technology. I am trying to configure/tune the APM, but am not currently using an airspeed sensor, and can't figure out how the APM handles airspeed in this case. I've found very little online.
First, I am wondering how the APM uses the ARSPD_FBW_MIN and ARSPD_FBW_MAX parameters in the absence of an airspeed sensor. Does it use these parameters, and if so, does it have an algorithm for estimating airspeed?
Second, I am not sure the flying characteristics of my plane, and am trying to determine its range of flying airspeeds from telemetry logs of a MANUAL flight (so I can set ARSPD_FBW_MIN and ARSPD_FBW_MAX). Can anyone tell me what the APM is actually measuring in the "airspeed" field? I can't decipher the plot below. I was flying racetracks around the pattern in strong winds, but as you can see in the plot, airspeed consistently indicates well above groundspeed for the entire duration of the flight.