Abstract:
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zum Bestimmen einer Orientierung eines Fahrzeugs. Die Vorrichtung umfasst einen Empfänger mit einer Antenne, wobei die Antenne eine Richtcharakteristik aufweist, wobei der Empfänger ausgebildet ist, mittels der Antenne eine Mehrzahl von Signalen von einer Mehrzahl von Signalquellen zu empfangen, und einen Prozessor, welcher ausgebildet ist, eine Mehrzahl von Empfangsfeldstärken der Mehrzahl von Signalen zu bestimmen, wobei jedem Signal eine Empfangsfeldstärke zugeordnet ist, und die Orientierung des Fahrzeugs auf der Basis der Mehrzahl von Empfangsfeldstärken und der Richtcharakteristik der Antenne zu bestimmen.
Abstract:
The system provides a global navigation satellite system (GNSS) receiver in a vehicle. The GNSS receiver includes a radio frequency (RF) receiving circuit configured to receive GNSS signals from a plurality of GNSS satellites orbiting Earth at respective azimuth and elevation angles, a memory device storing a predetermined antenna pattern including initial signal to noise ratio (SNR) values for each of the respective azimuth and elevation angles, and a processor. The processor is configured to calculate SNR values of the received GNSS signals, iteratively calculate an updated antenna pattern by combining the calculated SNR values with the initial SNR values, compare further SNR values of further received GNSS signals to the SNR values in the updated antenna pattern to perform at least one of the following: 1) detection and mitigation of multipath signals, 2) estimation of vehicle heading, and 3) determination of a location of the antenna within the vehicle.
Abstract:
An apparatus comprising a first antenna, a second antenna, a processor and a memory. The first antenna is configured to connect to a GPS satellite. The second antenna is configured to connect to the GP S satellite. The first antenna is positioned separately from the second antenna. The processor is configured to execute instructions. The memory is configured to store the instructions that, when executed, perform the steps of (i) calculating a first value measured through a connection between the first antenna and the GPS satellite, (ii) calculating a second value measured through a connection between the second antenna and the GPS satellite, and (iii) determining a correction value to compensate for local conditions by analyzing differences between the first value and the second value.
Abstract:
In some example embodiments, there is provided an apparatus comprising an antenna configured to receive a signal from a global navigation satellite system, wherein the antenna includes a first feed and a second feed; a hybrid coupler including a first hybrid input, a second hybrid input, a first hybrid output, a second hybrid output, wherein the first hybrid input is coupled to the first feed, the second hybrid input is coupled to the second feed, and wherein the first hybrid output is shifted in phase by 90 degrees relative to the second hybrid output; a variable phase shifter including a shifter input and a shifter output, wherein the shifter input is coupled to the first hybrid output, wherein variable phase shifter is configured to induce an additional phase shift; and a combiner including a first combiner input, a second combiner input, and a combiner output, wherein the first combiner input is coupled to the shifter output, and the second combiner input is coupled to the second hybrid output, and wherein the combiner output represents a combined right hand circularly polarized signal and left hand circularly polarized signal, wherein the combiner output is provided to detection circuitry. Related systems, methods, and articles of manufacture are also disclosed.
Abstract:
Bei einem Golfball (10) mit einer Aussenhülle (11) ist in einem Kunststoffkern (12, 13) eine elektronische Einrichtung (20) integriert, welche zumindest einen Empfänger (21), eine Mikroelektronik (22) zum Auswerten und Weiterleiten der empfangenen Signale und einen Sender und/oder Empfänger (23) umfasst. Dieser Sender bzw. Empfänger (23) kann mit einem von einem Benutzer getragenen separaten elektronischen Gerät (30) kommunizieren. Dies ermöglicht einem Spieler einen nicht auf dem Fairway liegenden Ball, den man von blossem Auge nicht mehr sieht bzw. finden würde, ohne grossen Aufwand genau zu lokalisieren und zu orten.
Abstract:
An RF (e.g., GNSS) interference mitigation system and method uses a switchable bank of filters for selectively blocking signals in predetermined bandwidths based on detecting strong, interfering signals with an interference detection circuit including a sniffer antenna. A low- strength RF (e.g., GNSS) system can be combined with a spectrally-close high-strength, telecommunications receiver system for cooperative control. Alternatively, an RF receiver can detect tones, changes in DC bias or level changes to activate a filter selection switch.
Abstract:
Antenna systems (100) for receiving transmitted signals comprising at least a first tuned antenna (506a-b, 508a-b) disposed in a known relationship spatially with a second antenna (510a-b,512a-b), with the first tuned antenna electrically connected to the second antenna, are disclosed. The antenna system may be configured to allow the antennas to reliably discriminate between left-hand and right-hand polarized circular signals.
Abstract:
Arbitrary phase variations of a shared frequency synthesizer can be calibrated using a reference harmonic each time the shared frequency synthesizer is allocated to a network device to enable one frequency synthesizer to be shared between multiple network devices. On determining that the shared frequency synthesizer has been allocated to the network device, an output frequency of the shared frequency synthesizer can be aligned with a predetermined reference frequency that is associated with an operating frequency band of the network device. A phase correction factor associated with the shared frequency synthesizer can be calculated from a signal calculated based, at least in part, on the output frequency of the shared frequency synthesizer and the predetermined reference frequency. The phase correction factor is applied to a signal received at the network device to correct a phase error associated with the shared frequency synthesizer.
Abstract:
La présente invention concerne un dispositif pour éliminer les signaux de perturbation reçus par une station GNSS de référence. Le dispositif comporte des moyens pour recevoir un signal d'intérêt émis par un satellite, incluant une antenne principale à diagramme de rayonnement à ouverture sensiblement omnidirectionnelle. Il comporte également des moyens pour recevoir les signaux de perturbation, lesdits moyens incluant une antenne secondaire à diagramme de rayonnement directif à basses élévations et des moyens pour recevoir lesdits signaux de perturbation isolés du signal d'intérêt. Il comporte aussi des moyens pour soustraire les signaux de perturbation au signal d'intérêt, lesdits moyens incluant des moyens pour estimer la fonction de transfert différentielle W entre la voie de réception du signal d'intérêt et la voie de réception des signaux de perturbation, de manière à réaliser une soustraction cohérente desdits signaux. Application : systèmes GNSS à précision augmentée