提出了一種基于PIC16F877A微控制器和CC2500射頻收發(fā)器芯片的低功耗、低成本RFID（Radio Frequency Identification， 無線射頻識別）局域定位系統(tǒng)設計方法，介紹了系統(tǒng)的定位工作原理、主要硬件電路模塊及定位算法的設計和實現(xiàn)。采用基于序列號對時隙數(shù)運算的排序算法有效解決了多標簽識別碰撞的問題，基于射頻輻射強度（Received Signal Strength Indication， RSSI）和圓周定位算法實現(xiàn)了基于RFID多標簽系統(tǒng)的平面定位。實驗測試表明，這種射頻定位方法能夠實現(xiàn)一定精度下的無線局域定位的功能。
This algorithm was developed by Professor Ronald L. Rivest of MIT and can be found presented in several languages. What I provide to you here is a C++ derivative of the original C implementation of Professor Rivets. The library code itself is platform-independant and has been tested in Redhat Linux. I ve included the sample code and makefile that I used for the Linux test. The demo, however, was written with Visual C++ 6 on a Windows 2000 platform.
