Direct Position Estimation

This chapter presents an innovative concept that helps overcome some of the critical challenges and limitations in standard global navigation satellite system (GNSS) position, navigation, and timing. With the intention of facilitating the introduction of new material, it describes the signal model used, as well as the basics of the signal processing that apply to standard GNSS receivers. The chapter introduces Direct Position Estimation (DPE), where extensive details are provided regarding the signal model and the direct‐positioning concept. Additionally, it provides theoretical results demonstrating the performance enhancement of DPE with respect to two‐steps approaches. The chapter discusses the implementation details, where the authors move from the purely theoretical results to the more practical aspects. It also discusses some variants and alternative applications of DPE.