信息技术. 实时定位系统 (RTLS). 第62部分: 高速脉冲重复频率超宽带(UWB)空中接口

[中文适用范围]： ISO/IEC 24730 的这一部分定义了使用物理层超宽带 (UWB) 信令机制（基于 IEEE 802.15.4a UWB）的实时定位系统 (RTLS) 的空中接口。 该调制方案采用 16 MHz 或 64 MHz 的高速率脉冲重复频率 (PRF)，以及突发位置调制 (BPM) 和二进制相移键控 (BPSK) 的组合，为完全相干接收器提供极高水平的性能。 [外文原描述]： ISO/IEC 24730-62:2013 defines the air-interface for real time locating systems (RTLS) using a physical layer Ultra Wide Band (UWB) signalling mechanism (based on IEEE 802.15.4a UWB). This modulation scheme employs high rate pulse repetition frequencies (PRF) 16 MHz or 64 MHz, and a combination of burst position modulation (BPM) and binary phase-shift keying (BPSK) giving an extremely high level of performance with a fully coherent receiver. In addition to defining the air interface protocol (AIP) in terms of the physical layer modulation, ISO/IEC 24730-62:2013 also defines the AIP in terms of the messages sent over the air. This AIP supports simple one-way communication of a basic blink that may be used for a one-way Time Difference of Arrival (TDOA) based RTLS, where mobile tags periodically transmit the blink message which is received by an infrastructure consisting of a number of fixed reader nodes. This AIP also optionally supports bidirectional communication and two-way ranging between the readers and tags of an RTLS. The support of two-way ranging depends on additionally including a UWB receiver in the tag and UWB transmitters in the reader infrastructure. The mandatory default operational mode ensures interoperability between tags and infrastructure from various manufacturers, while the availability of several options offers flexibility to the developer of the infrastructure to adapt the behaviour of the overall system to the specific needs of his application.