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Nextnav Llc patents


Recent patent applications related to Nextnav Llc. Nextnav Llc is listed as an Agent/Assignee. Note: Nextnav Llc may have other listings under different names/spellings. We're not affiliated with Nextnav Llc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Nextnav Llc-related inventors


Signaling in a wireless positioning system

Devices, systems, and methods for sending positional information from transmitters/beacons. In one implementation a transmitter generates a range block including a ranging signal and a hybrid block including positioning data, and sends the range block and hybrid block at different times. A user device may receive signals from a plurality... Nextnav Llc

Coding in a positioning system

Embodiments describe determining position by selecting a set of digital pseudorandom sequences. The magnitudes of the cross-correlation between any two sequences of the chosen set are below a specified threshold. A subset of digital pseudorandom sequences are selected from the set such that the magnitudes of the autocorrelation function of... Nextnav Llc

Systems and methods for calibrating unstable sensors

Calibrating an unstable sensor of a mobile device. Systems and methods for calibrating a sensor of a mobile device determine a first estimated position of the mobile device without using any measurement from the sensor of the mobile device, generate a second estimated position of the mobile device using a... Nextnav Llc

Methods & systems for improving correlation

Systems and methods for improving correlation. In at least one system and method, a signal is received and divided into a plurality of slices. Each of the slices is divided into a plurality of sub-slices. A plurality of chips of a PN code are generated, and sub-slice correlation results are... Nextnav Llc

Wide area positioning system

Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning... Nextnav Llc

Systems and methods for low-power location determination using terrestrial signals

Reducing power consumption of a receiver in association with estimating the receiver's position using ranging signals. Systems and methods may determine power reduction strategy information, identify a power reduction strategy using the determined power reduction strategy information, and place one or more modules of the receiver into a reduced power... Nextnav Llc

Interference mitigation for positioning systems

An interference removal filter that includes a combination of a first filter and a second filter, where the first filter passes signals over a frequency range of size B with a variation of less than +/−3 dB, where the peak value of the impulse response of the second filter is... Nextnav Llc

Systems and methods for determining an altitude error value associated with an estimated altitude of a mobile device

Determining an altitude error value associated with an estimated altitude of a mobile device. In certain disclosed systems and methods for determining an altitude error value associated with an estimated altitude of a mobile device, a first error value related to systematic error and a second error value related to... Nextnav Llc

Interference detection and rejection for wide area positioning systems

Detecting and mitigating the effects of interference in a positioning system. A received signal is divided into a plurality of receive signal time/frequency (RSTF) values. A plurality of threshold values are determined based on expected energy values for the received signal. In one implementation, if a predetermined number of the... Nextnav Llc

Interference detection and rejection for wide area positioning systems using maximal ratio combining in the correlation domain

Interference detection and mitigation using maximal ratio combining in the correlation domain. Systems and methods for interference detection and mitigation using maximal ratio combining in the correlation domain may receive a plurality of copies of a positioning signal, compute a plurality of correlation functions using the received positioning signals; weight... Nextnav Llc

Systems and methods for controlling access to position information

Controlling access to position information. Control of access to position information may be provided by exchanging authenticating messages that restrict distribution of the position information to authorized recipients. Alternatively, control of access may be provided by limiting when hardware that determines position information is active.... Nextnav Llc

Enhanced location system using wireless transmission beacons with varying power

Communicating transmission power information that specifies a transmission power used by a reference point for use in estimating a position of a mobile device. Systems and methods measure an amount of power present in a signal received from the reference point, receive an identifier of the reference point and transmission... Nextnav Llc

Systems and methods for assured time synchronization of an rf beacon

Synchronizing the local time of beacons. Systems and methods discipline a high-stability local clock of a designated beacon within a geographic region to a network time, and synchronize a local clock of another beacon within the geographic region to the network time.... Nextnav Llc

Characterizing and using building weather profile parameters

Determining building weather profile parameters, and correcting an estimated altitude of a receiver using the building weather profile parameters. Systems and methods for estimating an altitude of a receiver using building weather profile parameters may identify one or more weather profile parameters for a building, determine an initial estimate of... Nextnav Llc

Systems and methods for improving the performance of a timing-based radio positioning network using estimated range biases

Estimating range bias in a timing-based radio positioning network. Systems and methods estimate range bias, and use the estimated bias to adjust an estimated range measurement for use in estimating a position of a receiver. Estimated range bias may be based on surveyed range errors associated with locations near the... Nextnav Llc

Systems and methods for pseudo-random coding

Systems and methods for improving performance in terrestrial and satellite positioning systems. Signal processing systems and methods are described for selecting, from among a set of codes, certain codes having desired autocorrelation and/or cross-correlation properties. Systems and methods for generating, encoding, transmitting, and receiving signals using the selected codes are... Nextnav Llc

Systems and methods for improving an estimate of receiver altitude by mitigating the effects of transmitter heating

Improving an estimated altitude of a receiver by mitigating the effects of transmitter heating. Systems and methods for improving estimates of a receiver's altitude determine a reference pressure at a reference altitude using a temperature measured at a transmitter or another temperature value, an altitude of the transmitter, and a... Nextnav Llc

Systems and methods for transmitting information used to estimate a position of a mobile device

Transmitting information used to estimate a position of a mobile device. This disclosure describes NEAD-based and external location server (ELS)-based positioning systems and methods that determine when an identifier of a mobile device is not known or when the identifier of the mobile device is known but cannot be detected... Nextnav Llc

Systems and methods for generating signals from terrestrial transmitters, and for processing the signals using gnss receiver hardware

Generating signals from non-GNSS transmitters, and processing the signals using a GNSS positioning module. Systems and methods identify a chipping rate, identify a PN code length, generate a PN code that has a length equal to the identified PN code length, generate a positioning signal using the identified chipping rate... Nextnav Llc

Altitude-based indoor or outdoor detection

Using estimates of a receiver's altitude to determine where a receiver is located and to refine a positioning system's estimate of a receiver's position. Systems and methods determine whether a receiver is inside or outside a building, and may use the determination to confirm or adjust an initial estimate of... Nextnav Llc

Position estimation of a receiver using anchor points

Estimating one or more positions of a receiver using one or more anchor points. Systems and methods for estimating a position of a receiver using a particular anchor point may identify an area of interest that includes anchor points, identify the particular anchor point, and then use information about the... Nextnav Llc

Using positioning signals from transmitters of one network to estimate positions of mobile devices of other networks

Receiving positioning signals in support of estimating positions of receivers. Systems and methods for receiving positioning signals in support of estimating positions of receivers may receive, at a receiver which is authorized to transmit signals through a first network but is not authorized to transmit signals through a second network,... Nextnav Llc

Designing a calibration system for use in calibrating unstable sensors

Using a calibration sensor to calibrate an unstable sensor from a network of unstable sensors. Approaches for using a calibration sensor to calibrate the unstable sensor initially identify an unstable sensor in a geographic region to be calibrated by a calibration sensor using a model of environmental conditions for the... Nextnav Llc

Systems and methods for using doppler measurements to estimate a position of a receiver

Estimating the position of a receiver using positioning signals and Doppler frequency measurements. Approaches for estimating the position of a receiver using positioning signals and Doppler frequency shift measurements determine an initial estimate of a receiver's position using ranging signals from a first system, generate Doppler frequency shift measurements using... Nextnav Llc








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