Patents by Inventor Martin Orejas

Martin Orejas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200341153
    Abstract: Systems and methods for reducing bias impact on GNSS integrity are described herein. In certain embodiments, a method includes determining a phase of travel of a vehicle. The method also includes determining a probability of hazardously misleading information (PHMI) for the corresponding phase of travel. Further, the method includes determining a protection level (PL) using based on the PHMI, wherein the PL is calculated based on a standard deviation of position error plus a standard deviation of bias along an axis of interest. Additionally, the method includes comparing the protection level against an alert limit.
    Type: Application
    Filed: April 25, 2019
    Publication date: October 29, 2020
    Applicant: Honeywell International Inc.
    Inventors: Martin Orejas, Jakub Skalicky, Jussi Raasakka
  • Patent number: 10690779
    Abstract: A baseband tracking channel in a GNSS receiver is provided. The baseband tracking channel comprises: a code generator to generate a local signal correlating with an incoming signal received by the GNSS receiver; a multiplier that multiplies the local signal with a baseband signal corresponding to an incoming signal received by the GNSS receiver to generate a code removed signal; a prompt correlator including at least one integration register that integrates samples of the code removed signal corresponding to a first portion of each pseudorandom noise code chip of the code removed signal to provide a first integration register output, and integrates samples corresponding to a second portion of each PRN code chip to provide a second integration register output; and a side peak tracking detection module that generates information indicating when side peak tracking is occurring based on the first integration register output and the second integration register output.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: June 23, 2020
    Assignee: Honeywell International Inc.
    Inventors: Jussi Raasakka, Martin Orejas, Tomas Hynek, Jakub Skalicky
  • Patent number: 10663600
    Abstract: A method of global navigation satellite system (GNSS) acquisition comprises: computing a line of sight (LOS) angle between a LOS vector of a first satellite and a LOS vector of a second satellite, wherein each LOS vector is the LOS vector between a receiver and the respective satellite; computing a maximum Doppler difference, wherein the maximum Doppler difference is computed between the first satellite and the second satellite based on the LOS angle and a maximum velocity vector attainable by the receiver, wherein Doppler is induced at least by movement of the receiver; determining a final frequency search range based on the maximum Doppler difference computed between the first satellite and the second satellite, wherein the frequency search range includes a center frequency equal to the first frequency at which the first satellite is found; acquiring a GNSS signal from the second satellite at a second frequency.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: May 26, 2020
    Assignee: Honeywell International Inc.
    Inventors: Martin Orejas, Jakub Skalicky, Tomas Hynek
  • Patent number: 10613233
    Abstract: A GNSS receiver comprising at least one processing device configured to, in at least one first process: group satellites into subsets for a first distribution, each satellite included in one subset, each subset includes at least one satellite and less than all satellites, at least one subset includes more than one satellite; store the first distribution in memory as primary distribution; calculate a protection level based on navigation sub-solutions calculated using the first distribution; determine whether a new distribution of satellites is needed; when new distribution is not needed, the processing device configured to recalculate the protection level based on second navigation sub-solutions calculated using the first distribution; when new distribution is needed, the processing device configured to: group satellites into subsets for a second distribution; store the second distribution in memory as the primary distribution; recalculate the protection level based on third navigation sub-solutions calculated
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: April 7, 2020
    Assignee: Honeywell International Inc.
    Inventors: Jakub Skalicky, Martin Orejas, Jussi Raasakka, Michal Pfleger
  • Patent number: 10495761
    Abstract: A global navigation satellite system (GNSS) receiver including a processing device configured to: group GNSS satellites in view of the GNSS receiver into subsets based on relative geometries of the GNSS satellites relative to the GNSS receiver, wherein a GNSS satellite of the GNSS satellites is included in at most one subset of the subsets, wherein each subset of the subsets includes at least one GNSS satellite of the GNSS satellites and less than all GNSS satellites of the GNSS satellites, and wherein at least one subset includes more than one GNSS satellite; calculate a plurality of navigation sub-solutions based on data received at the GNSS receiver from the GNSS satellites using at least one GNSS antenna, wherein each navigation sub-solution of the navigation sub-solutions is calculated with at least one different subset of the subsets excluded; and calculate a protection level based on the navigation sub-solutions.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: December 3, 2019
    Assignee: Honeywell International Inc.
    Inventors: Jakub Skalicky, Jussi Raasakka, Martin Orejas, Ondrej Kutik
  • Patent number: 10416315
    Abstract: A Global Navigation Satellite System receiver comprising at least one processor is provided.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: September 17, 2019
    Assignee: Honeywell International Inc.
    Inventors: Jakub Skalicky, Martin Orejas, Jussi Raasakka
  • Patent number: 10386491
    Abstract: An efficient covariance matrix computation method is disclosed in connection with certain GNSS applications, including Advanced Receiver Autonomous Integrity Monitoring (ARAIM) and geometry screening. The system and method of the present application enable computation of multiple covariance matrices with substantially greater efficiency than previous approaches, including the rank-one update formula. For example, the system and method of the present application advantageously involves substantially fewer and simpler arithmetic operations than previous approaches. In addition, unlike the rank-one update formula, the system and method of the present application can be used to compute the subsolution in which all the satellites of a given constellation are removed.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: August 20, 2019
    Assignee: Honeywell International Inc.
    Inventors: Jakub Skalicky, Martin Orejas, Jussi Raasakka, Ondrej Kutik
  • Publication number: 20180364363
    Abstract: A baseband tracking channel in a GNSS receiver is provided. The baseband tracking channel comprises: a code generator to generate a local signal correlating with an incoming signal received by the GNSS receiver; a multiplier that multiplies the local signal with a baseband signal corresponding to an incoming signal received by the GNSS receiver to generate a code removed signal; a prompt correlator including at least one integration register that integrates samples of the code removed signal corresponding to a first portion of each pseudorandom noise code chip of the code removed signal to provide a first integration register output, and integrates samples corresponding to a second portion of each PRN code chip to provide a second integration register output; and a side peak tracking detection module that generates information indicating when side peak tracking is occurring based on the first integration register output and the second integration register output.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 20, 2018
    Inventors: Jussi Raasakka, Martin Orejas, Tomas Hynek, Jakub Skalicky
  • Publication number: 20180364364
    Abstract: A method of global navigation satellite system (GNSS) acquisition comprises: computing a line of sight (LOS) angle between a LOS vector of a first satellite and a LOS vector of a second satellite, wherein each LOS vector is the LOS vector between a receiver and the respective satellite; computing a maximum Doppler difference, wherein the maximum Doppler difference is computed between the first satellite and the second satellite based on the LOS angle and a maximum velocity vector attainable by the receiver, wherein Doppler is induced at least by movement of the receiver; determining a final frequency search range based on the maximum Doppler difference computed between the first satellite and the second satellite, wherein the frequency search range includes a center frequency equal to the first frequency at which the first satellite is found; acquiring a GNSS signal from the second satellite at a second frequency.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 20, 2018
    Inventors: Martin Orejas, Jakub Skalicky, Tomas Hynek
  • Patent number: 10145959
    Abstract: A global navigation satellite system (GNSS) receiver includes: at least one radio frequency (RF) front end configured to receive a GNSS signal from a single GNSS antenna and to digitize the GNSS signal into a digitized GNSS signal; at least one processor configured to: calculate weight to be applied to a sample of a block of samples of the digitized GNSS signal; apply the weight to at least one sample of the block of samples of the digitized GNSS signal to create a weighted GNSS signal; and perform signal processing on the weighted GNSS signal.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: December 4, 2018
    Assignee: Honeywell International Inc.
    Inventors: Jussi Raasakka, Martin Orejas, Ondrej Kutik, Jakub Skalicky
  • Publication number: 20180259648
    Abstract: A Global Navigation Satellite System receiver comprising at least one processor is provided.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 13, 2018
    Inventors: Jakub Skalicky, Martin Orejas, Jussi Raasakka
  • Patent number: 10018729
    Abstract: A method of advanced receiver autonomous integrity monitoring of a navigation system is discussed and two modifications facilitating its implementation in a hybrid navigation system are disclosed. In the first approach, relations describing the effect of unmodeled biases in pseudo-measurement on the Kalman filter state estimate are analytically derived and their incorporation into the integrity monitoring algorithm is described. The method comprises receiving a plurality of signals transmitted from space-based satellites, determining a position full-solution and sub-solutions, specifying a pseudorange bias, computing a transformation matrix for the full-solution and all sub-solutions using a Kalman filter, computing a bias effect on an error of filtered state vectors of all sub-solutions, and adding the effect to computed vertical and horizontal protection levels.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: July 10, 2018
    Assignee: Honeywell International Inc.
    Inventors: Jindrich Dunik, Martin Orejas, Zdenek Kana
  • Publication number: 20180081064
    Abstract: A GNSS receiver comprising at least one processing device configured to, in at least one first process: group satellites into subsets for a first distribution, each satellite included in one subset, each subset includes at least one satellite and less than all satellites, at least one subset includes more than one satellite; store the first distribution in memory as primary distribution; calculate a protection level based on navigation sub-solutions calculated using the first distribution; determine whether a new distribution of satellites is needed; when new distribution is not needed, the processing device configured to recalculate the protection level based on second navigation sub-solutions calculated using the first distribution; when new distribution is needed, the processing device configured to: group satellites into subsets for a second distribution; store the second distribution in memory as the primary distribution; recalculate the protection level based on third navigation sub-solutions calculated
    Type: Application
    Filed: May 18, 2017
    Publication date: March 22, 2018
    Inventors: Jakub Skalicky, Martin Orejas, Jussi Raasakka, Michal Pfleger
  • Patent number: 9885788
    Abstract: Embodiments for satellite subset selection for use in monitoring the integrity of computed navigation solutions are disclosed. In one embodiment, a Global Navigation Satellite System (GNSS) receiver comprises: a processing device configured to: group a plurality of satellites in view of the GNSS receiver into a plurality of subsets, wherein a satellite of the plurality of satellites is included in at most one subset of the plurality of subsets, wherein each subset of the plurality of subsets includes at least one satellite of the plurality of satellites and less than all satellites of the plurality of satellites, and wherein at least one subset includes more than one satellite; calculate a plurality of navigation sub-solutions, wherein each navigation sub-solution of the plurality of navigation sub-solutions is calculated with at least one different subset of the plurality of subsets excluded; and calculate a protection level.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: February 6, 2018
    Assignee: Honeywell International Inc.
    Inventors: Jakub Skalicky, Martin Orejas, Jussi Raasakka
  • Publication number: 20180024248
    Abstract: Systems and methods of determining ionosphere delay for a GNSS system are provided. In one embodiment, a GNSS system includes an antenna configured to receive GNSS signals from one or more GNSS satellites. The system further includes a signal processing circuit coupled to the antenna and configured to down convert the GNSS signals from RF to IF. The system further includes a processing device coupled to a memory, the memory including a database of a plurality of weights and an activation function for a neural network, the neural network trained to output an approximation of an output of a NeQuick model. The processing device configured to: apply the plurality of weights and the activation function for the neural network to a plurality of inputs generated from the GNSS signals; and estimate an indication of ionosphere delay based on an output of the neural network.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 25, 2018
    Inventors: Martin Orejas, Zbynek Fedra, Jussi Raasakka
  • Patent number: 9784844
    Abstract: A method comprises receiving a plurality of signals from a plurality of space-based satellites, wherein the plurality of space-based satellites comprises at least one space-based satellite from each of a plurality of Navigation Satellite System (NSS) constellations. The method also comprises determining, in a first domain, a first plurality of sub-solutions based on a respective sub-set of the plurality of signals, each respective sub-set in the first domain chosen according to a characteristic defining the first domain; and determining, in a second domain, a second plurality of sub-solutions based on a respective sub-set of the plurality of signals, each respective sub-set in the second domain chosen according to a characteristic defining the second domain. The method further comprises determining if an error is present in the navigation system based on the first plurality of sub-solutions and on the second plurality of sub-solutions.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: October 10, 2017
    Assignee: Honeywell International Inc.
    Inventors: Zdenek Kana, Jindrich Dunik, Martin Orejas
  • Publication number: 20170269218
    Abstract: A global navigation satellite system (GNSS) receiver includes: at least one radio frequency (RF) front end configured to receive a GNSS signal from a single GNSS antenna and to digitize the GNSS signal into a digitized GNSS signal; at least one processor configured to: calculate weight to be applied to a sample of a block of samples of the digitized GNSS signal; apply the weight to at least one sample of the block of samples of the digitized GNSS signal to create a weighted GNSS signal; and perform signal processing on the weighted GNSS signal.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 21, 2017
    Inventors: Jussi Raasakka, Martin Orejas, Ondrej Kutik, Jakub Skalicky
  • Patent number: 9766346
    Abstract: In one embodiment, a method for selecting a sub-set of satellites from a set of N satellites is provided. The method includes recursively evaluating each sub-set of N?P satellites of a set of N satellites. If only one sub-set satisfies one or more first criterion, then the one sub-set that satisfies the one or more first criterions is selected. If, however, more than one sub-set satisfies the one or more first criterion, then the sub-sets that satisfy the one or more first criterion are evaluated with respect to one or more second criterion and the one sub-set that optimizes the one or more second criterion is selected. Once the selected set of N satellites is equal to the number of satellites from which a receiver is configured to calculate a navigation solution, then that selected set of N satellites is used to calculate a navigation solution.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 19, 2017
    Assignee: Honeywell International Inc.
    Inventors: Jindrich Dunik, Martin Orejas, Zdenek Kana
  • Patent number: 9720091
    Abstract: A global navigation satellite system (GNSS) receiver includes a processor to determine whether a first satellite is in view of GNSS receiver; whether a second satellite is in view of GNSS receiver when first satellite is in view of GNSS receiver; and whether a third satellite is in view of GNSS receiver when first satellite is not in view of GNSS receiver. Second satellite was previously determined more likely to be in view when first satellite is in view based on a first average distance between first satellite and second satellite based on a first orbit of first satellite and a second orbit of second satellite. Third satellite was previously determined more likely to be in view when first satellite is not in view based on a second average distance between first satellite and third satellite based on first orbit of first satellite and a third orbit of third satellite.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: August 1, 2017
    Assignee: Honeywell International Inc.
    Inventors: Jakub Skalicky, Jussi Raasakka, Martin Orejas
  • Patent number: 9705560
    Abstract: A method of performing a discrete Fourier transform (DFT) on one or more data samples in a global navigation satellite system baseband tracking channel is provided. The method comprises loading a pseudorandom noise code generator with a constant value in the baseband tracking channel; setting a tracking loop integration time according to a selected frequency resolution; updating a carrier generator with a selected DFT frequency in the baseband tracking channel; integrating a data sample in the baseband tracking channel; and storing the integrated data sample in a DFT bin. The method determines whether all DFT bins have been received, and if all DFT bins have not been received, the method repeats starting with updating the carrier generator, until all DFT bins have been received.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: July 11, 2017
    Assignee: Honeywell International Inc.
    Inventors: Jussi Raasakka, Ondrej Kutik, Martin Orejas, Jakub Skalicky