Position Location Algorithm Based on Least Square Estimation

This document presents a position location algorithm implementation based on Least Square Estimation. The core algorithm processes timing information derived from the Time of Flight (TOA) of signals transmitted between transmitter (Tx) and receiver (Rx) nodes. The implementation covers the complete positioning pipeline, featuring coordinate calculation through matrix operations and error minimization techniques characteristic of least squares estimation. The solution includes visualization components that plot the final node coordinates in 2D space, providing immediate feedback on positioning accuracy. Key implementation aspects such as coordinate transformation, error handling, and convergence criteria are documented within the source code comments. This algorithm enables precise node localization through TOA measurements, making it particularly valuable for navigation systems, tracking devices, and wireless sensor networks where accurate position determination is critical. The code structure follows modular design principles, separating signal processing, matrix computations, and visualization for maintainability and extensibility.