Patent classifications
G01S3/22
Direction of arrival determination for a radio signal
At least two input signals, each characterizing a radio signal having a radio frequency (RF), are received. The input signals are converted into at least three output signals. The output signals have a unique combination of corresponding magnitudes for each RF phase difference between the input signals. A set of magnitudes corresponding to the output signals is measured using a mobile measuring device. An RF phase angle value is determined based the measured set of magnitudes. The RF phase angle value is converted into an angle value indicative of the direction of arrival of the radio signal.
Antenna systems and methods for tracking non-geosynchronous satellites
A method performed by a ground station antenna system for tracking a non-Geo satellite. A signal is received from the satellite and a signal quality metric associated with the signal is estimated. A first tracking mode is selected and implemented when the estimated signal quality metric is below a threshold, in which the signal is demodulated to obtain demodulated signal quality metric (DSQM) estimates, and then a first tracking operation is performed to point an antenna beam at the satellite based on the DSQM estimates. A second tracking mode is selected and implemented when the estimated signal quality metric is above the threshold, in which signal strength estimates of the signal are obtained and then a second tracking operation is performed to point the antenna beam at the satellite based at least in part on the signal strength estimates.
Antenna systems and methods for tracking non-geosynchronous satellites
A method performed by a ground station antenna system for tracking a non-Geo satellite. A signal is received from the satellite and a signal quality metric associated with the signal is estimated. A first tracking mode is selected and implemented when the estimated signal quality metric is below a threshold, in which the signal is demodulated to obtain demodulated signal quality metric (DSQM) estimates, and then a first tracking operation is performed to point an antenna beam at the satellite based on the DSQM estimates. A second tracking mode is selected and implemented when the estimated signal quality metric is above the threshold, in which signal strength estimates of the signal are obtained and then a second tracking operation is performed to point the antenna beam at the satellite based at least in part on the signal strength estimates.
SYSTEM AND METHOD FOR DETERMINING DIRECTION OF A RADIO FREQUENCY SIGNAL
One or more embodiments of the present disclosure relate to a system and method for determining direction of a radio frequency. RF signals from multiple directions may be received via a plurality of phased array antennas. The received RF signals may be converted into in-phase (I) and quadrature (Q) representations. The IQ representations may be decoded to extract signal characteristics. Magnitude data and phase data may be computed from the extracted signal characteristics. Signal direction vector of strongest received signal may be determined by identifying peak signal strength patterns using the computed magnitude data and phase-aligned signal characteristics data. The computed signal direction vector may be rendered on a user device to indicate the direction of the strongest received RF signal.
SYSTEM AND METHOD FOR DETERMINING DIRECTION OF A RADIO FREQUENCY SIGNAL
One or more embodiments of the present disclosure relate to a system and method for determining direction of a radio frequency. RF signals from multiple directions may be received via a plurality of phased array antennas. The received RF signals may be converted into in-phase (I) and quadrature (Q) representations. The IQ representations may be decoded to extract signal characteristics. Magnitude data and phase data may be computed from the extracted signal characteristics. Signal direction vector of strongest received signal may be determined by identifying peak signal strength patterns using the computed magnitude data and phase-aligned signal characteristics data. The computed signal direction vector may be rendered on a user device to indicate the direction of the strongest received RF signal.
ANTENNA SYSTEMS AND METHODS FOR TRACKING NON-GEOSYNCHRONOUS SATELLITES
A method performed by a ground station antenna system for tracking a non-Geo satellite. A signal is received from the satellite and a signal quality metric associated with the signal is estimated. A first tracking mode is selected and implemented when the estimated signal quality metric is below a threshold, in which the signal is demodulated to obtain demodulated signal quality metric (DSQM) estimates, and then a first tracking operation is performed to point an antenna beam at the satellite based on the DSQM estimates. A second tracking mode is selected and implemented when the estimated signal quality metric is above the threshold, in which signal strength estimates of the signal are obtained and then a second tracking operation is performed to point the antenna beam at the satellite based at least in part on the signal strength estimates.
ANTENNA SYSTEMS AND METHODS FOR TRACKING NON-GEOSYNCHRONOUS SATELLITES
A method performed by a ground station antenna system for tracking a non-Geo satellite. A signal is received from the satellite and a signal quality metric associated with the signal is estimated. A first tracking mode is selected and implemented when the estimated signal quality metric is below a threshold, in which the signal is demodulated to obtain demodulated signal quality metric (DSQM) estimates, and then a first tracking operation is performed to point an antenna beam at the satellite based on the DSQM estimates. A second tracking mode is selected and implemented when the estimated signal quality metric is above the threshold, in which signal strength estimates of the signal are obtained and then a second tracking operation is performed to point the antenna beam at the satellite based at least in part on the signal strength estimates.