Embodiments described herein generate proximal groupings of wireless signals based upon the temporal persistence and spatial proximity of the wireless signals as observed by a plurality of observer devices. For example, a first observer device may observe a first set of wireless signals at a first timepoint and a second observer device may observe a second set of wireless signals at a second timepoint. The first observer device may again observe a third set of wireless signals at a third timepoint. Based upon these observations, a server may generate a proximal grouping a wireless signals containing a subset of the first, second, third of wireless signals based upon temporal persistence and spatial proximity. Temporal persistence may be based upon the repeated observations of the subset of wireless signals across different timepoints and the spatial proximity may be based upon the proximity of locations of the observer devices.

A method of assuring integrity of range measurements and position solutions comprises obtaining range measurement statistics between network nodes, performing a snapshot integrity test for the range measurement statistics, and performing a sequential integrity test using the range measurement statistics. The snapshot integrity test comprises using Gram matrices with a current configuration of the nodes; performing a singular value consistency check using the Gram matrices against a user selected threshold; and detecting and excluding range measurement statistics with instantaneous errors that cause the singular value to exceed the threshold. The sequential integrity test comprises formulating main node and sub-node sets using solution separation; implementing filters for the main node and sub-node sets; performing a consistency check using discriminators and decision thresholds; detecting and excluding range measurement statistics with both instantaneous and time-correlated errors; and computing a protection level for relative positions computed from the main node and sub-node sets.

Methods, systems, and devices for wireless communication are described. An initiator user equipment (UE) may broadcast, via a sidelink connection to a set of target UEs, a group sidelink communication request that includes a sidelink ranging service identifier. The group sidelink communication request may further include a broadcast identifier or a groupcast identifier. The initiator UE may establish, via the sidelink connection, a set of unicast sidelink sessions with the set of target UEs. some examples, the initiator UE may transmit, via the sidelink connection, a set of position reference signal requests via the set of unicast sidelink sessions to initiate a set of sidelink ranging sessions. The initiator UE may then receive, via the sidelink connection, a set of position reference signal responses from the set of target UEs during each of the plurality of sidelink ranging sessions.

A system for analyzing movement of a plurality of objects, including a transceiver, a location and movement estimator, and a group classifier, where the transceiver receives a plurality of information units from the objects, each information unit includes data related to radio signals, the location and movement estimator uses the data to compute movement characteristics for the objects, and the group classifier classifies the objects to coordinated groups according to their movement characteristics.

A system may include a mobile ad-hoc network (MANET) including nodes. The nodes may include beacon-based clusterhead (BB-CH) nodes and members. Each of the nodes may be configured to transmit communication data packets and transmit beacons. Each of the nodes may have passive spatial awareness. For each of at least some of the BB-CH nodes having members, a BB-CH node may be configured to compile spatial awareness information of all members of the BB-CH node. The compiled spatial awareness information may include a BB-CH node identification, position-location information (PLI) of the BB-CH node, a quantity of the members, and a member list with PLI. For each of the at least some of the BB-CH nodes, the BB-CH node may be configured to broadcast, via efficient flooding, some or all of the compiled spatial awareness information to every connected node.

In one aspect, a process for position estimation entails obtaining (a) at least one direct distance estimate corresponding to a distance between one or more intervening devices, (b) at least one direct angle estimate corresponding to a spanning angle formed involving the one or more intervening devices, or both (a) and (b). Based on (a) the at least one direct distance estimate corresponding to the distance between devices including the one or more intervening devices, (b) the at least one direct angle estimate corresponding to the spanning angle formed involving the one or more intervening devices, or both (a) and (b), an indirect distance estimate between a first device and a second device or an indirect angle estimate involving the first device and the second device is determined. The first device and the second device may be out of range with respect to one another for a direct distance measurement.

A system and method established and maintains precision relative position, navigation, and timing (PNT) across a network of at least four mutually connected mobile platforms. In embodiments, a key (e.g., advantaged, absolute positioning capable) node of the network determines its pressure altitude and inertial state relative to its platform reference frame and receives inertial state and pressure altitude data from each neighboring node (in exchange for its own) to estimate the relative position and orientation of each neighbor node in its platform frame. The key node performs ranging to each neighboring node, and the neighboring nodes additionally range between each other and exchange ranging data with the key node. By correcting position and orientation estimates via ranging data, the key node determines and maintains extended relative PNT (e.g., in GPS-denied areas), which relative PNT solution is distributed across all network nodes.

A method for checking the association of radio nodes and objects to a radio environment with a radio node set having at least three radio nodes spaced apart from one another, each with a radio interface and its separate timer, wherein at least two radio nodes are reference radio nodes with known distances from one another and at least one radio node is a test radio node, the association of which with the radio environment of the reference radio node is checked. During a measuring process, signals are emitted and received by radio nodes of the radio node set, wherein at least two radio nodes of the radio node set operate as transceivers and at least one radio node exclusively operates as a transmitter or exclusively operates as a receiver or a transceiver.

The present disclosure provides a positioning method of a target node in a wireless ad hoc network, including: performing an initial positioning to obtain a first positioning result for the target node; determining, based on the first positioning result and a second positioning result for an other node in the wireless ad hoc network, whether a positioning error exists in the first positioning result or not, wherein the second positioning result at least contains an accurate second positioning result; and calculating a third positioning result for the target node based on the accurate second positioning result, in response to determining a positioning error exists in the first positioning result. The present disclosure further provides a positioning apparatus of a target node in a wireless ad hoc network, an electronic device, and a storage medium.

A transceiver system includes one or more groups of transceivers. The locations of the transceivers are initially unknown. During deployment, the location of each transceiver in the group is automatically estimated by the remaining transceivers in the group. Once the locations of the transceivers in the group are estimated, deployment of the transceivers is complete. The transceivers may estimate location attributes of mobile transceivers within a vicinity of the transceivers in the group.