The a system for measuring distance between an RFID reader and tag, including an adaptive linear combiner, which is a tapped delay line with controllable weights on each tap, and outputs that are summed and subtracted from a reference to produce an error signal. After a sufficient number of cycles, the weight distribution indicates the delay of the received signal with respect to the reference, and by extension determines the distance between the tag and receiver.

The radar includes an antenna having a radiation pattern forming a sum channel, SUM, a radiation pattern forming a difference channel, DIFF, and a pattern forming a control channel, CONT, a first transmission and reception chain being associated with the SUM channel and a second transmission and reception chain being associated with the CONT channel, a reception channel being associated with the DIFF channel. Each of the transmission and reception chains is able to transmit and to receive simultaneously, the transmission chain comprising a filtering operation that filters signals transmitted at 1090 MHz and the reception chain comprising a filtering operation that filter signals transmitted at 1030 MHz, in such a way that the chains operate independently of one another.

A system and method for reliably and efficiently monitoring and arbitrating the performance of one or more UTM infrastructure systems are provided herein. The method for monitoring and arbitrating a plurality of UTM infrastructure networks involves monitoring and arbitrating a plurality of unmanned traffic management (UTM) infrastructure networks comprising integrating a UTM arbitration system between the plurality of UTM infrastructure networks, wherein the UTM arbitration system is operably configured to simultaneously monitor the UTM infrastructure networks; monitoring information and/or data associated with one or more UTM systems associated with the UTM infrastructure networks; detecting the presence or absence thereof of one or more inconsistencies in the data and/or information associated with the one or more UTM systems; and initiating a reconciliation activity in response to detecting the presence of at least one inconsistency in the data and/or information associated with the one or more UTM systems.

A system and method for reliably and efficiently monitoring and arbitrating the performance of one or more UTM infrastructure systems are provided herein. The method for monitoring and arbitrating a plurality of UTM infrastructure networks involves monitoring and arbitrating a plurality of unmanned traffic management (UTM) infrastructure networks comprising integrating a UTM arbitration system between the plurality of UTM infrastructure networks, wherein the UTM arbitration system is operably configured to simultaneously monitor the UTM infrastructure networks; monitoring information and/or data associated with one or more UTM systems associated with the UTM infrastructure networks; detecting the presence or absence thereof of one or more inconsistencies in the data and/or information associated with the one or more UTM systems; and initiating a reconciliation activity in response to detecting the presence of at least one inconsistency in the data and/or information associated with the one or more UTM systems.

A method of the present disclosure is a method of adjusting a radio wave sensor configured to transmit a radio wave to a reference object including a reflection portion and receive a reflected wave which is the radio wave reflected by the reflection portion. The method includes at least one of moving the reference object or moving the reflection portion, to cause a temporal change in detection data obtained from the reflected wave; and distinguishing the reflected wave and noise from each other by using the temporal change in the detection data.

A method of processing a radar hit from an object using, for each of a plurality of cells, a signal strength threshold, a hit rate threshold, a time of last detection; and receiving, for one of the plurality of cells corresponding to the object, a measured signal strength, a measured hit rate and a time of measurement. The object is identified as clutter if the measured hit rate is greater than the hit rate threshold, and the measured signal strength is less than signal strength threshold. The signal strength threshold is above a conventional CFAR signal threshold. Measured Doppler strength may also be used to identify clutter. Identification can be determined using Doppler-polarity-specific data values. The hit rate and the mean Doppler speed of the one of the plurality of cells can be updated using a running average.

A method of processing a radar hit from an object using, for each of a plurality of cells, a signal strength threshold, a hit rate threshold, a time of last detection; and receiving, for one of the plurality of cells corresponding to the object, a measured signal strength, a measured hit rate and a time of measurement. The object is identified as clutter if the measured hit rate is greater than the hit rate threshold, and the measured signal strength is less than signal strength threshold. The signal strength threshold is above a conventional CFAR signal threshold. Measured Doppler strength may also be used to identify clutter. Identification can be determined using Doppler-polarity-specific data values. The hit rate and the mean Doppler speed of the one of the plurality of cells can be updated using a running average.

A receiver includes an RF module to receive and down convert multiple types of RF signals received from at least one antenna; a communication unit configured to communicate signals with at least one external device; and a processing unit communicatively coupling the radio frequency module with the communication unit. Processing unit receives operation mode selection. When first operation mode is selected, processing unit receives first input signal from antenna via RF module (the first input signal including ILS signal and/or VOR signal) and outputs first output signal based on first input signal to external device. When second operational mode is selected, processing unit receives second input signal from antenna via radio frequency unit (second input signal including AIS signal including data regarding a current location of remotely located transmitting device) and outputs second output signal based on second input signal to external device.

A receiver includes an RF module to receive and down convert multiple types of RF signals received from at least one antenna; a communication unit configured to communicate signals with at least one external device; and a processing unit communicatively coupling the radio frequency module with the communication unit. Processing unit receives operation mode selection. When first operation mode is selected, processing unit receives first input signal from antenna via RF module (the first input signal including ILS signal and/or VOR signal) and outputs first output signal based on first input signal to external device. When second operational mode is selected, processing unit receives second input signal from antenna via radio frequency unit (second input signal including AIS signal including data regarding a current location of remotely located transmitting device) and outputs second output signal based on second input signal to external device.

If there is a detection point that is erroneously recognized as an obstacle even though the detection point indicates a control-target vehicle, an obstacle that does not exist has been detected near the control-target vehicle. Consequently, the control-target vehicle might become unable to autonomously travel in an attempt to avoid a collision with the erroneously recognized obstacle. Considering this, an object indicated by a detection point that is detected by a road-side sensor and that exists within a certain distance range from a position of a control-target vehicle specified by an own-position measurement device, is not regarded as an obstacle.