RTKLIB是日本东京海洋大学开发（Tokyo University of Marine Science and Technology）开发的一个开放源程序包，供标准与精确GNSS全球导航卫星系统应用。RTKLIB包括一个可移植的程序库和几个应用程序（AP）库。
RTKLIB的特点：
（1）支持标准的和精确的定位算法：GPS，GLONASS，QZSS准天顶卫星系统,北斗和SBAS
（2）支持多种定位模式与GNSS实时和后处理：单点，DGPS / DGNSS，动态的，静态的，移动基线，定点，PPP运动，PPP静态和PPP定点(RTKLIB is an open source package developed by Tokyo University of Marine Science and Technology in Tokyo, Japan, for standard and precise GNSS global navigation satellite system applications. RTKLIB includes a Portable Library and several application library (AP) libraries.
The characteristics of RTKLIB:
(1) support standard and accurate localization algorithms:
GPS, GLONASS, QZSS quasi zenith satellite systems, Beidou and SBAS
(2) support a variety of
Location mode and GNSS real time and post processing:
Single point, DGPS / DGNSS, dynamic, static, moving baseline, fixed point, PPP motion, PPP static and PPP fixed point)