Automatically determining the positions of anchors can mitigate the cumbersome and costly nature of manual efforts. The manual method requires measuring the relative position of each anchor node individually, a task that becomes increasingly tedious with the addition of more nodes. Moreover, it is susceptible to measurement errors. To overcome these challenges, self-calibration techniques have been introduced. These methods automatically position the anchor nodes based on available information. Presently, we provide two self-calibration algorithms, which are displayed below.