The present invention discloses a receiver and transmitter of enroute aircraft data (RATEAD) system and method of tracking missing aircraft by the system. The system comprising: a plurality of network enabled devices at a plurality of locations; and said plurality of network enabled devices are communicatively coupled to an aircraft passing within a pre-defined range, wherein a data of said in range aircraft is communicatively transmitted in real-time to a network device of said plurality of network enabled devices with which said aircraft is connected.

The present invention discloses a receiver and transmitter of enroute aircraft data (RATEAD) system and method of tracking missing aircraft by the system. The system comprising: a plurality of network enabled devices at a plurality of locations; and said plurality of network enabled devices are communicatively coupled to an aircraft passing within a pre-defined range, wherein a data of said in range aircraft is communicatively transmitted in real-time to a network device of said plurality of network enabled devices with which said aircraft is connected.

A positioning system and method for determination of location data of an object are described. The positioning system includes one or more transmitting units configured to transmit a multi-frequency signal that comprises at least two different signal frequency components. The positioning system also includes a receiver system mounted on the object, and configured to receive the multi-frequency signals from the transmitting units, and to determine phases of each signal frequency component of the multi-frequency signal. The positioning system also includes a processing system configured to receive the phases of each signal frequency component of the multi-frequency signal, and to determine a distance between the transmitting units and the object, and the location data of the object.

A positioning system and method for determination of location data of an object are described. The positioning system includes one or more transmitting units configured to transmit a multi-frequency signal that comprises at least two different signal frequency components. The positioning system also includes a receiver system mounted on the object, and configured to receive the multi-frequency signals from the transmitting units, and to determine phases of each signal frequency component of the multi-frequency signal. The positioning system also includes a processing system configured to receive the phases of each signal frequency component of the multi-frequency signal, and to determine a distance between the transmitting units and the object, and the location data of the object.

Various aspects to improve a sidelink communication by UEs in a presence of a reconfigurable intelligent surface (RIS) are provided. In an aspect, the UE may determine RIS location information for a RIS device controlled by a base station, configure one or more sidelink communication parameters based on the RIS location information, and perform a sidelink communication with a second UE based on the one or more sidelink communication parameters. In an aspect, the UE may receive, from a base station, a RIS configuration setting indicating communication patterns of a RIS device controlled by the base station, the communication patterns being respectively associated with pattern durations, select a pattern duration of the pattern durations, and perform a sidelink communication with a second UE during the selected pattern duration of the pattern durations that is associated with a respective communication pattern of the communication patterns.

Various aspects to improve a sidelink communication by UEs in a presence of a reconfigurable intelligent surface (RIS) are provided. In an aspect, the UE may determine RIS location information for a RIS device controlled by a base station, configure one or more sidelink communication parameters based on the RIS location information, and perform a sidelink communication with a second UE based on the one or more sidelink communication parameters. In an aspect, the UE may receive, from a base station, a RIS configuration setting indicating communication patterns of a RIS device controlled by the base station, the communication patterns being respectively associated with pattern durations, select a pattern duration of the pattern durations, and perform a sidelink communication with a second UE during the selected pattern duration of the pattern durations that is associated with a respective communication pattern of the communication patterns.

A position detection method to be executed by a computer, the position detection method includes transmitting, by a sensor terminal, a signal obtained by performing capture processing on a satellite signal from a satellite of a search target according to an order of the satellites of the search targets; calculating, by a calculation device, a position of the sensor terminal based on a signal transmitted by the sensor terminal; and determining a satellite having a highest discovery probability based on a specific estimation method for second and subsequent search targets, using an index which is reflected larger as the discovery probability of other satellites is higher or lower, in a case where the first satellite is captured when a first search target is determined.

A position detection method to be executed by a computer, the position detection method includes transmitting, by a sensor terminal, a signal obtained by performing capture processing on a satellite signal from a satellite of a search target according to an order of the satellites of the search targets; calculating, by a calculation device, a position of the sensor terminal based on a signal transmitted by the sensor terminal; and determining a satellite having a highest discovery probability based on a specific estimation method for second and subsequent search targets, using an index which is reflected larger as the discovery probability of other satellites is higher or lower, in a case where the first satellite is captured when a first search target is determined.

Certain implementations of the disclosed technology may include systems and methods for reducing noise in dual-frequency GNSS signal observation. The method can include: receiving, at a GNSS receiver, a first signal and a second signal. At least the second signal includes noise. The first signal is characterized by a first carrier frequency, and the second signal is characterized by a second carrier frequency. The method includes: down converting, sampling, cross-correlating, accumulating, determining ambiguous instantaneous phases, determining non-ambiguous instantaneous phases, producing normalized non-ambiguous instantaneous first phase samples, constructing a normalized first counter rotation phasor, generating a counter-rotated second observable, applying a low pass filter to remove noise; and outputting the filtered second observable.

Techniques for detecting GNSS spoofing using inertial mixing data are disclosed. One or more navigation parameters are determined by at least one GNSS receiver and a plurality of IRS from at least two periods of time. The navigation parameters from the GNSS receiver(s) and the IRS are compared at each time period, and the difference(s) between the compared navigation parameters are further compared to generate at least one differential value. A system can detect GNSS spoofing by comparing the at least one differential value to a suitable threshold. In one aspect each IRS navigation parameter is compared with a corresponding GNSS navigation parameter, wherein the plurality of differential values is mixed before threshold comparison. In another aspect, each IRS navigation parameter is mixed before comparison with a GNSS navigation parameter, and the resulting differential value is then compared against a threshold.