Regardless of whether it is an engineering control network or a dedicated control network, it is required to have enough control points in the measurement area, and the density of control points is usually expressed by side length
Whether it is an engineering control network or a dedicated control network, there are sufficient control points in the measurement area, and the density of the control points is usually expressed in terms of edge length
Whether it is engineering control network or special control network, there are enough control points in the survey area, and the density of control points is usually expressed by side length<br>