TI中文支持网SDKv2.30 中有一个Aoa_reciever and Aoa_sender, 在SDKv2.40中更新为Rtls_passive、Rtls_master、Rtls_slave，需要3个CC2460R2， 原因是什么，这两个在AOA计算上有什么区别吗？
Viki Shi：
The RTLS offering is today available on CC2640R2 for evaluation, with compatibility towards the v5.1 implementation. Please note that core feature of AoA for localization is to use triangulation technique, which requires at least 3 devices, hence our introduction of "passive". The fully qualified BT5.1 solution will be available later this year, targeting CC2642 platform.
user5980416：
回复 Viki Shi:
Hi， Viki Shi
You mean SDKv2.40 is partially implemented 5.1 specification,while SDKv2.30 is not for 5.1？
‘’‘And later in this year a new version totally for 5.1 will be available.’‘’Expecting…
Regards,
F.L.
Viki Shi：
回复 user5980416:
不是，是说目前RTLS兼容未来的5.1规范，目前SDK还是5.0的。这是BU的信息，请看这边原答案：e2e.ti.com/…/788308
Alvin Chen：
回复 user5980416:
RTLS目前TI设计的是三角测量法，后续会遵循spec 。
user5980416：
回复 Alvin Chen:
目前我想先验证到达角度测量是否准确（先不考虑计算位置），使用SDKv2.30（2个CC2460）和 SDKv2.40（3个CC2460），效果上会有区别吗？
Alvin Chen：
回复 user5980416:
还是建议使用2.40的
The RTLS passive does not actively participate in the BLE connection between the RTLS master and slave. Instead, it uses the Micro BLE-Stack in connection monitoring mode to follow the connection. To do this, the passive device relies on the Master to distribute the connection parameters once a connection is formed. The passive node does the following:Implement ToF passive role
Receives packets with CTE and performs in-phase and quadrature component (IQ) sampling
Uses Micro BLE-Stack in Connection Monitoring mode to follow connection between master and slave
