Abstract Horizontal control networks established with monuments are functional if the conditions related to the number of control points, their density, condition and stability of coordinates are met. For functionality defined in those terms, deterministic accuracy characteristics are of little use. The subject matter discussed herein includes the two key features of geodetic control points, i.e., usability and stability. Due to the varying properties of those variables and the impact of the operating time of the system, there is no alternative to reliability-based approach in developing the functionality model. The measures of functionality and the procedures of data acquisition for developing the model of the control network destruction process have been defined. The solution presented herein is relevant for geodetic practice, providing a standard procedure for defining the time frame and the scope of the control network upgrading. The identified destruction process model optimizes this task assuming critical states expressed by the functionality probability. The applied approach is an example of the reliability theory-based approach typical for engineering. The issue of simulating the destruction process is illustrated with the results of the tests of class 3 control networks conducted in Kielce and Lodz regions in Poland. As a result of the tests, the characteristic properties of the control network destruction process have been identified. It was also shown how the patterns of usability and accuracy of the geodetic control points are relevant on the stage of implementing investment project tasks.

中文翻译：

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水平控制网的功能和可靠性（波兰）

摘要 如果满足与控制点的数量、密度、坐标条件和稳定性有关的条件，则以纪念碑建立的水平控制网络是有效的。对于这些术语中定义的功能，确定性精度特性几乎没有用。这里讨论的主题包括大地控制点的两个关键特征，即可用性和稳定性。由于这些变量的不同属性以及系统运行时间的影响，在开发功能模型时没有替代基于可靠性的方法。已经定义了用于开发控制网络破坏过程模型的功能度量和数据采集程序。这里提出的解决方案与大地测量实践相关，提供用于定义控制网络升级的时间框架和范围的标准程序。已识别的销毁过程模型假设由功能概率表示的临界状态来优化此任务。所应用的方法是典型的基于可靠性理论的工程方法的一个例子。模拟破坏过程的问题通过在波兰凯尔采和罗兹地区进行的 3 类控制网络的测试结果来说明。作为测试的结果，已经确定了控制网络破坏过程的特征属性。还展示了大地控制点的可用性和准确性模式如何与实施投资项目任务的阶段相关。