The Gravity Recovery Object Oriented Programming System (GROOPS) is a software toolkit written in C++ that enables the user to perform core geodetic tasks. Key features of the software include gravity field recovery from satellite and terrestrial data, the determination of satellite orbits from global navigation satellite system (GNSS) measurements, and the computation of GNSS constellations and ground station networks. Next to raw data processing, GROOPS is capable to operate on time series and spatial data to directly analyze and visualize the computed data sets. Most tasks and algorithms are (optionally) parallelized through the Message Passing Interface, thus the software enables a smooth transition from single-CPU desktop computers to large distributed computing environments for resource intensive tasks. For an easy and intuitive setup of complex workflows, GROOPS contains a graphical user interface to create and edit configuration files. The source code of the software is freely available on GitHub (https://github.com/groops-devs/groops) together with documentation, a cookbook with guided examples, and step-by-step installation instructions.

重力恢复面向对象编程系统 (GROOPS) 是一个用 C++ 编写的软件工具包，使用户能够执行核心大地测量任务。该软件的主要功能包括从卫星和地面数据中恢复重力场、根据全球导航卫星系统 (GNSS) 测量确定卫星轨道，以及计算 GNSS 星座和地面站网络。除了原始数据处理之外，GROOPS 还能够对时间序列和空间数据进行操作，以直接分析和可视化计算出的数据集。大多数任务和算法（可选）通过消息传递接口并行化，因此该软件能够从单 CPU 台式计算机平滑过渡到大型分布式计算环境，以执行资源密集型任务。为了简单直观地设置复杂的工作流程，GROOPS 包含一个图形用户界面来创建和编辑配置文件。该软件的源代码可在 GitHub (https://github.com/groops-devs/groops) 上免费获得，同时提供文档、带有指导示例的食谱和分步安装说明。