SYSTEMS AND METHODS FOR GNSS SNR PROBABILISTIC LOCALIZATION AND 3-D MAPPING

摘要

Various embodiments each include at least one of systems, methods, devices, and software for GNSS simultaneous localization and mapping (SLAM). The disclosed techniques demonstrate that simultaneous localization and mapping (SLAM) can be performed using only GNSS SNR and geo-location data, collectively termed GNSS data henceforth. A principled Bayesian approach for doing so is disclosed. A 3-D environment map is decomposed into a grid of binary-state cells (occupancy grid) and the receiver locations are approximated by sets of particles. Using a large number of sparsely sampled GNSS SNR measurements and receiver/satellite coordinates (all available from off-the-shelf GNSS receivers), likelihoods of blockage are associated with every receiver-to-satellite beam. Loopy Belief Propagation is used to estimate the probabilities of each cell being occupied or empty, along with the probability of the particles for each receiver location.

主权项

1. A probabilistic global navigation satellite system (GNSS) method, the method comprising:
receiving an input GNSS data; generating a navigation output based on a probabilistic simultaneous localization and mapping (SLAM); and storing, in a tangible storage medium, the navigation output.