On 22 apr., 03:50, 33 wrote:
Does anyone know how wind direction is calculated SeeYou? *Are
there ways to fly with SeeYou to give the program better
data to get more accurate results? *

SeeYou and SeeYou Mobile calculate the winds depending on what data is
available. If you only give them raw GPS data, then the wind is
calculated in circling. Don't expect great accuracy or sensitivity
from this method, but it's a useful indication most of the time.

Once you start feeding IAS/TAS data to SeeYou or SeeYou Mobile you
will get much much better results. The wind will be calculated in
straight flight by measuring the wind components in different
directions. After just a few minutes of flying in one direction you
will get a pretty good indication of the wind which will then be
corrected on the fly as you fly in other directions.

In order to feed this info to SeeYou Mobile, your flight recorder must
be able to send IAS/TAS data through NMEA to the PDA. Most of the high-
end varios do that. Even some modern lower-end varios do the same
(such as LX 160/1600 and Borgelt, both combined with a GPS source).

In order to see this information in SeeYou after the flight, data
about IAS/TAS must be stored in the IGC file. SeeYou Mobile will
automatically store all of the data it has received. If you have a
flight that was recorded with SeeYou Mobile connected to a NMEA source
that included IAS/TAS, then the wind indication in SeeYou will be very
informative. That goes especially for wave flights where normally you
would not get any wind indication from raw GPS data. Other flight
computers may be setup to record IAS/TAS data in I-records, but that
largely depends on your hardware.