标准摘要
[中文适用范围]： 本部分规定了实时定位系统（RTLS）中使用的直接序列扩频（DSSS）2,4 GHz空口协议。这些发射器使用多个扩展码，并采用QPSK数据编码和Walsh偏移QPSK（WOQPSK）扩展方案。该标准适用于提供X-Y坐标和数据遥测的网络定位系统，利用实时定位系统（RTLS）发射器自动生成直接序列扩频无线电频率信标。这些设备可以现场编程，并支持可选激励模式，以修改位置更新速率和RTLS设备的位置。 [外文原描述]： ISO/IEC 24730-2 is comprised of a main document and two additional parts, ISO/IEC 24730-21 and ISO/IEC 24730-22, and defines a networked location system that provides X-Y coordinates and data telemetry. The system utilizes real-time locating systems (RTLS) transmitters that autonomously generate a direct sequence spread spectrum radio frequency beacon. These devices can be field programmable and support an optional exciter mode that allows modification of the rate of location update and location of the RTLS device. ISO/IEC 24730-2 defines these modes, but does not define the means by which they are accomplished. ISO/IEC 24730-22:2012 is the mode of ISO/IEC 24730-2 transmitters operating with multiple spread codes and employing a quadrature phase shift keying (QPSK) data encoding and Walsh offset QPSK (WOQPSK) spreading scheme.
英文名称Information technology - Real time locating systems (RTLS) - Part 22: Direct Sequence Spread Spectrum (DSSS) 2,4 GHz air interface protocol: Transmitters operating with multiple spread codes and employing a QPSK data encoding and Walsh offset QPSK (WOQPSK) spreading scheme