Invention relates to multisystem radio-frequency units of navigational satellite receiver and may be used for simultaneous reception of navigation signals from multiple navigation systems: GLONAS, GPS, Galileo, BeiDou, IRNSS and QZSS. The unit comprises 4 reception channels, 3 of which are identical and independently configurable reception channels, simultaneously receiving of navigation signals from GLONAS, GPS, Galileo, BeiDou, IRNSS and QZSS navigation systems in various combinations, and one channel for signal reception of S band of IRNSS, L2/L3/L5 bands and 65-862 MHz bands, including real-time differential corrections data (RTK). The unit also comprises 4 frequency synthesizers, a quadrature heterodyne signal driver for mixers for each channel and automatic calibration system for intermediate frequency filter passband for each channel. 3 identical channels for L1, E1, B1, E6, B3, L2, L3, B2, L5, E5 bands of signal reception have configurable channel outputs types with ability to choose real or complex outputs.

A mobile device may be configured to perform concurrent Satellite Positioning System (SPS) operation and wireless communications when uplink signals transmitted by the mobile device interferes with the reception of SPS signals in one or more frequency bands. The mobile device may determine if the SPS receiver has already acquired SPS signals and is in a tracking state. If the SPS receiver is not in a tracking state, an SPS acquisition procedure is initiated before the wireless communication session is initiated. The SPS acquisition procedure is performed until the SPS receiver reaches a tracking state, or until a timeout is reached. Once the SPS receiver is in a tracking state, the wireless communication session may be initiated, during which the SPS receiver is controlled, e.g., to perform signal blanking, measurement exclusion, or disable SPS reception, to mitigate interference with SPS signals.

A mobile device may be configured to perform concurrent Satellite Positioning System (SPS) operation and wireless communications when uplink signals transmitted by the mobile device interferes with the reception of SPS signals in one or more frequency bands. The mobile device may determine if the SPS receiver has already acquired SPS signals and is in a tracking state. If the SPS receiver is not in a tracking state, an SPS acquisition procedure is initiated before the wireless communication session is initiated. The SPS acquisition procedure is performed until the SPS receiver reaches a tracking state, or until a timeout is reached. Once the SPS receiver is in a tracking state, the wireless communication session may be initiated, during which the SPS receiver is controlled, e.g., to perform signal blanking, measurement exclusion, or disable SPS reception, to mitigate interference with SPS signals.

A microservice node can store first raw satellite data, associated with a first satellite constellation, in a first electronic file in a first data store, can combine the first electronic file and one or more second electronic files, associated with the first satellite constellation, into a first compressed electronic file, and can store the first compressed electronic file in a second data store. The first raw satellite data and second raw satellite data can be received during a particular time period. The second data store can include a second compressed electronic file that includes third raw satellite data associated with a second satellite constellation. The microservice node can receive a request from a client device, can combine the first compressed electronic file and the second compressed electronic file into a third compressed electronic file based on the request, and can transmit the third compressed electronic file to the client device.

In a locator device, a dead reckoning part calculates a position of a subject vehicle by dead reckoning. A pseudorange smoothing part smooths a pseudorange between a GNSS satellite and a position of the subject vehicle using a carrier wave phase of the GNSS satellite. A GNSS receiver positioning error evaluation part evaluates reliability of the position of the subject vehicle calculated by the multi-GNSS receiver. A GNSS positioning part (Kalman Filter (KF) method) calculates a position of the subject vehicle from a smoothed value of the pseudorange, a positioning augmentation signal, and an orbit of the GNSS satellite. A complex positioning part (KF method) calculates an error in the dead reckoning from the position of the subject vehicle calculated by the GNSS positioning part (KF method), and corrects the position of the subject vehicle calculated by the dead reckoning part based on the error in the dead reckoning.

In a locator device, a dead reckoning part calculates a position of a subject vehicle by dead reckoning. A pseudorange smoothing part smooths a pseudorange between a GNSS satellite and a position of the subject vehicle using a carrier wave phase of the GNSS satellite. A GNSS receiver positioning error evaluation part evaluates reliability of the position of the subject vehicle calculated by the multi-GNSS receiver. A GNSS positioning part (Kalman Filter (KF) method) calculates a position of the subject vehicle from a smoothed value of the pseudorange, a positioning augmentation signal, and an orbit of the GNSS satellite. A complex positioning part (KF method) calculates an error in the dead reckoning from the position of the subject vehicle calculated by the GNSS positioning part (KF method), and corrects the position of the subject vehicle calculated by the dead reckoning part based on the error in the dead reckoning.

A receiver comprises a mixer that is capable of mixing a selected, received GNSS signal and the local carrier frequency signal (e.g., adjusted with offset signal feedback) or local carrier IF signal to provide a baseband signal. A filter is configured to low-pass filter and to decimate the received samples of digital baseband signal that is encoded by a received pseudo random noise code (PN) sequence. A control module is configured to align temporally one or more received samples of the received PN sequence, or a portion thereof, in a buffer data storage device with a clock edge or symbol transition of the clock signal of a set of local samples of corresponding PN local sequence, or portion thereof, of a local signal or PN replica signal. A set of correlators or the data processing module is configured correlate the received samples of the received PN code sequence, or portion thereof, in a buffer data storage with the respective set of local samples of the local PN sequence, or portion thereof, to pursue identification of a temporally aligned, local PN code sample associated with the corresponding selected, received GNSS signal. Integrators can generate integrations of the correlations to identify clock edge or symbol transitions in the received PN code sequence. A data processing module is configured to evaluate the correlations with the greatest signal energy or magnitude with identifiable symbol transitions that are generally indicative of acquisition of or the identification of the proper temporally aligned carrier frequency offset of the GNSS signal.

The disclosure relates to a method for generating a three-dimensional environment model using GNSS measurements, comprising at least the following steps: a) receiving a plurality of measuring data sets, each of which describes a propagation path of a GNSS signal between a GNSS satellite and a GNSS receiver; b) selecting from the plurality of measuring data sets individual measuring data sets which meet a first selection criterion, the first selection criterion being characteristic for the presence of an object boundary along the propagation path of the GNSS signal; and c) capturing an object boundary of an object in the environment of at least one GNSS receiver using the measuring data sets selected.

The disclosure relates to a method for generating a three-dimensional environment model using GNSS measurements, comprising at least the following steps: a) receiving a plurality of measuring data sets, each of which describes a propagation path of a GNSS signal between a GNSS satellite and a GNSS receiver; b) selecting from the plurality of measuring data sets individual measuring data sets which meet a first selection criterion, the first selection criterion being characteristic for the presence of an object boundary along the propagation path of the GNSS signal; and c) capturing an object boundary of an object in the environment of at least one GNSS receiver using the measuring data sets selected.

A microservice node can store first raw satellite data, associated with a first satellite constellation, in a first electronic file in a first data store, can combine the first electronic file and one or more second electronic files, associated with the first satellite constellation, into a first compressed electronic file, and can store the first compressed electronic file in a second data store. The first raw satellite data and second raw satellite data can be received during a particular time period. The second data store can include a second compressed electronic file that includes third raw satellite data associated with a second satellite constellation. The microservice node can receive a request from a client device, can combine the first compressed electronic file and the second compressed electronic file into a third compressed electronic file based on the request, and can transmit the third compressed electronic file to the client device.