chiezecugt1956-rgb/flight-radar-lite

Flight Radar Lite - Live flight tracker over Nigeria using OpenSky Network API # Flight Radar Lite Live aircraft tracking over Nigerian airspace. Flight Radar Lite renders real-time ADS-B positions from the OpenSky Network on an OpenStreetMap basemap and exposes full telemetry for every tracked aircraft. **FUTM-SWE-221 · Project 13** ## Features - Dark aviation radar map centred on Nigeria (9.0820°N, 8.6753°E) and constrained to the monitored airspace box (4°–14°N, 2°–15°E). - Custom plane glyphs rotated to each aircraft's true track. - Live polling every 10 seconds; the previous snapshot stays on screen while refetching. - Sidebar with aircraft count, last-updated timestamp, search and a scrollable flight list. - Status banner for `Live`, `No flights`, `Demo feed` and `Feed error` states. - Demo aircraft fallback (`DEMO123`, 35,000 ft, 480 kts, 9.08°N / 8.68°E) when the feed is empty, so the radar is never blank. - Dedicated detail route `/flight/:icao24` with the complete OpenSky state vector: barometric and geometric altitude, ground speed, true track, vertical rate, squawk, ground state, SPI, position source, last contact and data age. - Fully responsive: stacked map + list on mobile, split radar/telemetry layout on desktop. ## Data pipeline 1. Request the Nigerian bounding box through the Vercel serverless function at `/api/flights`. The function adds CORS headers and fetches OpenSky server-side. 2. If the serverless function fails or returns no states, request the same bounds through the allorigins CORS proxy. 3. Normalize each positional state vector into a typed object (`src/lib/normalize.ts`), converting metres → feet (×3.28084), m/s → knots (×1.94384) and m/s → ft/min (×196.85). 4. Drop records without a valid position, records outside the airspace box, and records whose `last_contact` is older than 60 seconds (stale data). 5. Sort by callsign and render markers; on request failure the last good snapshot remains visible, and if both live sources fail the demo aircraft is shown. ## Tech stack | Layer | Choice …