10 results about "Gps satellites" patented technology

A method of updating a clock associated with an autonomous vehicle includes determining, at a processor, a sensor-based position of the autonomous vehicle, which is determined based on data from one or more sensors and based on a digital map. The method also includes determining, at the processor, a global positioning system (GPS) computed position of the autonomous vehicle and a GPS time. The GPS computed position and the GPS time are determined based on a plurality of GPS signals received from GPS satellites. The method further includes comparing the sensor-based position to the GPS computed position to determine whether the sensor-based position is within a threshold distance from the GPS computed position. The method also includes updating the clock associated with the autonomous vehicle based on the GPS time in response to a determination that the sensor-based position is within the threshold distance from the GPS computed position.

The application discloses a system for verifying the time precision of a TB time stamp recording device and a method thereof, which comprises a GPS antenna, a GPS receiver module, a microprocessor and a NAND gate; the GPS antenna is used for receiving signals transmitted by GPS satellites and transmitting the signals to the GPS receiver module; the GPS receiver module is used for outputting time service second pulses to the microprocessor and the NAND gate respectively after receiving the signals transmitted by the GPS antenna; the microprocessor is used for outputting a pulse control signal to the NAND gate according to a time information control instruction after receiving the time service second pulses transmitted by the GPS receiver module; and the NAND gate is used for outputting corresponding second pulses to the TB time stamp recording device for recording according to the received pulse control signal. The application is used for solving the technical problem that the precision of the TB time stamp recording device cannot be verified, so as to achieve the purpose of ensuring the precision of the TB time stamp recording device.

An emergency response activation (ERA) system comprising a graphical user interface (GUI) located at a dashboard of a vehicle, four or more global positioning system (GPS) satellites, a driving center, a 5G-communication control tower, an emergency response center (ERC) system, and 5G-enabled unmanned semi-autonomous aerial vehicles (UAVs). The GUI comprises distinct emergency activation buttons (EABs), each associated with a specific emergency. The GPS satellites provide a precise location of the vehicle associated with the specific emergency. The driving center receives information of the specific emergency via the GPS satellites once the EAB is pressed by an occupant of the vehicle. The 5G-communication control tower transmits the information from the driving center to a specific emergency response center via the GPS satellites. The ERC system dispatches emergency response personnel from the specific emergency response center at the precise location of the vehicle.

The invention relates to an LEO-GNSS precise point positioning method based on system deviation independent estimation. The method comprises the following steps: acquiring satellite observation data and product data of global navigation satellite systems (GNSS) satellites and low earth orbit (LEO) satellites, wherein the GNSS satellites comprise GPS satellites and BDS satellites; based on the acquired satellite observation data and product data, estimating a general state parameter by utilizing pseudo-range single point positioning (SPP), the general state parameter including an inter-system deviation (ISB) parameter of the GNSS and each LEO satellite in the LEO satellites; constructing a PPP measurement model at least partially based on the general state parameters, including constructing measurement equations for GPS satellites, BDS satellites and LEO satellites respectively, and linearizing the simultaneous measurement equations to obtain an observation coefficient matrix expression; and estimating a floating point solution of the PPP metrology model to determine the location of the receiver. Therefore, abnormal positioning caused by processing delay difference of different LEO satellite signals is avoided, and LEO enhanced PPP convergence efficiency is improved.

We provide information that will help you improve your score. [Solution] The golf navigation device 20 is a portable golf watch or the like that uses radio waves from GPS satellites and comprises an acquisition unit 21, a storage unit 24, a calculation unit 23, and a display unit 25. The acquisition unit 21 acquires information indicating the speed of the greens on that day. The storage unit 24 stores reference data that shows the correspondence between the user's swing amplitude and the distance the ball will roll when hit with that swing amplitude, for each green speed. The calculation unit 23 calculates the swing amplitude that the user should use on the greens on that day, according to the distance to the pin, by referring to the storage unit 24 based on the information acquired by the acquisition unit 21. The display unit 25 displays the swing amplitude that the user should use on the greens on that day using a color gradient 25C, based on the result calculated by the calculation unit 23.

The present application relates to a LEO-GNSS precise point positioning method based on system bias independent estimation. The method can include: obtaining satellite observation data and product data of global navigation satellite system (GNSS) satellites and low earth orbit (LEO) satellites, the GNSS satellites including GPS satellites and BDS satellites; estimating rough state parameters based on the obtained satellite observation data and product data using pseudorange point positioning (SPP), the rough state parameters including inter-system bias (ISB) parameters of each of the LEO satellites and the GNSS satellites; constructing a PPP measurement model based at least in part on the rough state parameters, including constructing measurement equations for the GPS satellites, the BDS satellites and the LEO satellites respectively, and linearizing the measurement equations to obtain an observation coefficient matrix expression; and estimating a float solution of the PPP measurement model to determine the positioning of the receiver. In this regard, the positioning abnormality caused by the difference in signal processing delay of different LEO satellites is avoided, and the convergence efficiency of LEO enhanced PPP is improved.

To provide a navigation system that can receive signals from Japanese GPS satellites without requiring any special equipment, ensuring high accuracy, safety, and reliability. [Solution] The system is characterized by comprising: a receiving function unit 320 that receives signal information transmitted from Japanese GPS satellites 200; a map information storage function unit 330 that stores map information provided by the Geospatial Information Authority of Japan; a location information generation function unit 340 that generates predetermined location information by referring to the map information provided by the Geospatial Information Authority of Japan stored in the map information storage function unit 330 and the signal information received by the receiving function unit 320; a reflection function unit 350 that reflects the predetermined location information generated by the location information generation function unit 340 onto arbitrary map information; and an output function unit 360 that displays or outputs the map information onto which the location information has been reflected by the reflection function unit 350.

The present disclosure relates to an occupancy sensor system for a vehicle. The system includes a central processing unit (CPU) electrically connected to a power source of the vehicle, one or more sensors for inputting raw data into the CPU, an electronic device with a user interface, and a wireless communications bus connected to the CPU. The CPU compares the raw data received from the sensors with a predetermined safety threshold and transmits an alert to the electronic device via the wireless communications bus if the raw data is not within the safety threshold. The system further includes a global positioning system (GPS) transceiver coupled to the vehicle for receiving radio transmissions from GPS satellites, and a radio-frequency identification (RFID) reader chip.

A global positioning system (GPS) receiver may include an antenna configured to receive GPS signals from GPS satellites, a radio frequency (RF) front end configured to pre-process signals received by the antenna, a demodulator / converter configured to perform demodulation and analog-to-digital conversion of output signals received from the RF front end, a clock configured to provide a consistent clock signal, and a digital signal processor configured to receive the clock signal and make time and code measurements associated with determining a location of the GPS receiver based on the signals received by the antenna. The GPS receiver may be configured to eliminate reflected or indirect signals from the time and code measurements.

The present disclosure relates to an occupancy sensor system for a vehicle. The system includes a central processing unit (CPU) electrically connected to a power source of the vehicle, one or more sensors for inputting raw data into the CPU, an electronic device with a user interface, and a wireless communications bus connected to the CPU. The CPU compares the raw data received from the sensors with a predetermined safety threshold and transmits an alert to the electronic device via the wireless communications bus if the raw data is not within the safety threshold. The system further includes a global positioning system (GPS) transceiver coupled to the vehicle for receiving radio transmissions from GPS satellites, and a radio-frequency identification (RFID) reader chip.