Gea-Suan LinJul 2, 2025

https://blog.gslin.org/archives/2025/07/03/12496/%e5%90%84%e5%ae%b6%e9%a3%9b%e6%a9%9f%e5%8d%b3%e6%99%82%e8%b3%87%e8%a8%8a%e7%b6%b2%e7%ab%99%e7%94%a8%e7%9a%84-mlat%ef%bc%8c%e5%ae%9a%e4%bd%8d%e9%a3%9b%e6%a9%9f%e4%bd%8d%e7%bd%ae/

各家飛機即時資訊網站用的 MLAT，定位飛機位置

#AdsB #airplane #flightaware #flightradar24 #fr24 #gps #jamming #mlat #multilateration #plane

各家飛機即時資訊網站用的 MLAT，定位飛機位置

看到「How Flightradar24 uses MLAT to counter GPS jamming」這篇提到他們用 MLAT 算飛機的位置，降低飛機經過 GPS 被干擾區域時資料問題 (通常就是戰場附近)。 查了維基百科有「Multilateration」這個條目，這張圖可以說明基本的點子，透過三個圓就可以估算出三維的位置 (也就是三個點的每個點都有一個半徑)： 對於 Flightradar24 或是 FlightAware 這些服務來說，收 ADS-B 訊號的站點位置是已知的，再加上用收到時間的差異就能算出飛機的位置，出自「How We Track Flights with ML...

Gea-Suan Lin's BLOG
st1nger  🏴‍☠️  Jul 2, 2025

How #Flightradar24 uses #Multilateration (#MLAT) to counter #GPS #jamming

“By calculating MLAT positions for all flights, Flightradar24 is able to counter the effects of GPS interference in real time and show a more correct path for an aircraft. We recently completed a major update to our MLAT calculations, allowing us to calculate MLAT positions using just three receivers”

https://www.flightradar24.com/blog/aviation-explainer-series/how-flightradar24-uses-mlat-to-counter-gps-jamming/

How Flightradar24 uses MLAT to counter GPS jamming | Flightradar24 Blog

Learn how Flightradar24 uses MLAT or Multilateration to combat the problem of GPS interference, including GPS jamming and GPS spoofing.

Flightradar24 Blog