Abstract: A constellation of Ultra-Wide Band (UWB) nodes, each with an UWB transceiver operating both as a monostatic/bi-static Radar, provide precise positional determination of both participating and nonparticipating movable objects. The UWB constellation identifies and locates objects within a geographic area using multipath signal analysis forming an occupancy grid. The resulting occupancy grid can identify parked cars, pedestrians, obstructions, and the like to facilitate autonomous vehicle operations, safety protocols, traffic management, emergency vehicle prioritization, collisions avoidance and the like.

Abstract: Gaining a time signal from a radio signal such as GPS, an ultra-wide band constellation can be synchronized. While the entirety of the constellation is synchronized to a nanosecond level of accuracy, local subsets of ultra-wide band nodes can establish even finer degrees of synchronization resulting in more accurate positional determination. These synchronization signals can be propagated to other nodes that are denied or incapable of receiving synchronizing radio (GPS) signals. Moreover, in cases in which a plurality of UPN nodes is unavailable to accurately determine an objects position, available UPN nodes can be combined with GPS pseudo ranges to achieve positional determination.

Abstract: Coherent radar returns gained from Ultra-Wideband Radars are correlated with features extracted from a georeferenced map to refine positional information and pose of an object. Data collected from one or more UWB Radars and other real time sensors affixed on an object can be processed to identify discrete edges or characteristic returns such as a pole, building or the like. These coherent returns can be correlated with features extracted from a georeferenced map. As the UWB Radar(s) location and orientation with respect to the object is (are) known the precise location and pose of the object on the georeferenced map can be determined by matching features found in the map or imagery with those of the coherent return. Moreover the configuration of the UWB Radars can be modified based on a perception of the local environment.

Abstract: Recursive constellations of Ultra-Wide Band (“UWB”) transceivers are optimized based on a desired functionality or objective. By structuring transceivers of an UWB network into a plurality of subsets or constellations of UWB nodes each constellation can be optimized for a particular purpose while maintaining connectivity and cohesiveness within the overarching network. Implementations of specific functionality can be applied to Intra-Vehicle, Inter-Vehicle and Vehicle-to-Infrastructure constellations resulting in localized optimizations while maintaining a cohesive and coherent UWB network.

Abstract: Methods and systems for acquiring a received impulse signal packet including a plurality of repeating short acquisition code sequences and at least one ratchet code sequence following a last one of the plurality of repeating short acquisition code sequences, the repeating short acquisition code sequences defined by a short acquisition code, the at least one ratchet code sequence defined by a ratchet code, and each ratchet code sequence greater in length than each repeating short acquisition code sequence. The method includes the step of concurrently searching the received impulse signal packet for the short acquisition code sequence in accordance with a frame time offset and each of a plurality of acquisition code offsets. The frame time offset is adjusted after each time the short acquisition code sequence is not found during a search. Tracking of the received impulse signal packet is initiated immediately after the short acquisition code sequence is found.