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TI的ZigBee方案定位问题与CSS定位技术

Other Parts Discussed in Thread: CC2431

ZigBee在定位方面有应用,但是貌似都是基于RSSI的,效果受环境影响大,精度比较差。最近发现nanotron公司的CSS芯片是基于TDOA原理的,可以做到精度在1m以内了,CSS技术在定位方面比ZigBee更具有优势,不知道TI有没有推出基于CSS技术的定位芯片?