In indoor environments the accuracy of positioning by global navigation satellite systems suffers significantly from signal blockage, reflection and diffraction. To develop advanced receiver position ...

Rear Admiral Melville in The North American Review. TimesMachine is an exclusive benefit for home delivery and digital subscribers. Full text is unavailable for this digitized archive article ...

BEACAN will design, build, and test a miniaturized ocean drifter. The drifter shall be capable of collecting positional coordinates and transmitting coordinates to a communications satellite.

China has ambitions for its rapidly expanding Beidou satellite navigation system to serve the whole world, not just Asia, but will it really be able to rival the well-established - and US-owned ...