APRS 51WG5
IGATE/DIGI/TRACK/GPS/BD//BLUETOOTH/WIFI
/
USB/4G
Venus
the target aircraft.
Select ROTATOR (GS-232B communication protocol) for Bluetooth output.
When an APRS beacon with a designated call sign is received, the true north position between the aircraft and the
station is calculated in real time.
And calculate the distance between the aircraft and the station in real time, as well as the altitude difference, and
calculate the elevation angle through the trigonometric function.
This machine will convert to GS-232B format through true north position and elevation angle, and output via Bluetooth
to control the G5500 rotator to realize the function of automatically tracking the aircraft.
About APRS latitude and longitude conversion
There are three commonly used latitude and longitude formats: degrees, minutes, minutes, seconds.
1 degree = 60 minutes 1 minute = 60 seconds.
Suppose my location: Latitude 25.091095 degrees Longitude 121.647661 degrees
Converted into degree minutes:
0.091095x60=5.4657 //decimal point X60
05.47 //The integer part is less than 2 digits, the first digit is filled with 0, and the decimal point is reserved for 2 digits
(rounded)
05.47=2505.47 //Degree X100 and add together Latitude fill in 2505.47N
Longitude conversion is the same as above:
0.647661X60=38.86
38.86=12138.86 //Degree X100 and add Longitude 12138.86E
