Robust GNSS Shadow Matching for Smartphones in Urban Canyons

Ng H.F., Zhang G., Hsu L. T.

IEEE Sensors Journal (2021)

Key idea. Shadow matching positions a receiver by comparing which satellites are visible against a 3D building model — strong exactly where ranging is weak (cross-street). This paper makes the method robust enough for smartphone-grade signals and noisy visibility decisions.

Impact. A step toward consumer-device urban positioning, feeding directly into the lab’s smartphone-positioning programme and the long-running Huawei collaboration.