Anonymuos ID: dad066 Jan. 25, 2023, 11:31 a.m. No.18224324   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun

>>18223591

"The judges should be very upset. But they don't seem to be."

Judges can fool ya. Usually wait until the final stages of any legal proceedings to make their own feelings known. Something about impartiality or some such.

Anonymuos ID: dad066 Jan. 25, 2023, 1:18 p.m. No.18224857   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun   >>4863

>>18224844

Why canโ€™t I see a certian aircraft or aircraft in a certain area?

 

ADSBExchange mainly has ADS-B and MLAT data, MLAT is derived from multiple receivers receiving ModeS messages from the same aircraft.

 

Secondary radar in general: https://www.radartutorial.eu/13.ssr/sr04.en.html

Mode-S: https://www.radartutorial.eu/13.ssr/sr20.en.html

ADS-B / Mode-S data: https://mode-s.org/decode/

The ICAO 24 bit address for each aircraft, often called ICAO ID / Hex ID or even shorter ICAO / Hex: https://en.wikipedia.org/wiki/Aviation_transponder_interrogation_modes#ICAO_24-bit_address

Note that transponders can be misconfigured and will then transmit the wrong identification.

 

Military planes sometimes on purpose use a bogus hex id.

 

Around 7000 people all over the world have installed a small SDR (https://www.rtl-sdr.com/about-rtl-sdr/) and an antenna to receive 1090 MHz and feed the data into our project. The received data is collected (ADS-B) and correlated to create MLAT positions. As we need to see an aircraft with 4 feeders to be able to find its location with MLAT the best way to expand coverage is to install your own feeder, even if there are already some in your area, or help us arrange to place one in the area of bad coverage.

https://www.adsbexchange.com/faq/