MQTT Essentials - A Lightweight IoT Protocol by Gaston C. Hillar English | 14 Apr. 2017 | ASIN: B01MS9I105 | 280 Pages | AZW3 | 6.19 MB Key Features Make your connected devices less prone to attackers by understanding practical security mechanisms D
哈夫曼经典之作，学习gps很好的参考书； Global Positioning System (GPS), originally Navstar GPS,[1][2] is a space-based radionavigation system owned by the United States government and operated by the United States Air Force. It is a global navigation satellite sys te
一本很好介绍GPS接收机的英文书 Applied and Numerical Harmonic Analysis Series Editor John J. Benedetto University of Maryland Editorial Advisory Board Akram Aldroubi Douglas Cochran Vanderbilt University Arizona State University Ingrid Daubechies Hans G. Feichtin
Highlights · Concurrent reception of up to 3 GNSS (GPS, Galileo, GLONASS, BeiDou) · Industry leading -167 dBm navigation sensitivity · Product variants to meet performance and cost requirements · Miniature LCC package · Superior anti-spoofing and an
Quectel EC25/EC21 module integrates a GNSS engine which supports GPS, BeiDou, Galileo and GLONASS systems, and also it supports gpsOneXTRA Assistance technology. The high performance GNSS engine is suitable for various applications where lowest-cost
