A method of assessing a reported UE location includes: receiving, at a network entity, the reported UE location; obtaining, at the network entity, a first signal frequency difference indicating a first difference between a received frequency of a first signal received by the UE corresponding to a first transmit signal of a first transmit frequency transmitted from a first non-terrestrial-network node, and a received frequency of a second signal received by the UE corresponding to a second transmit signal of a second transmit frequency transmitted from a second non-terrestrial-network node that is separate from the first non-terrestrial-network node; and providing, by the network entity, a UE location assessment indication based on the first signal frequency difference and a second difference between an expected frequency of the first signal at the reported UE location and an expected frequency of the second signal at the reported UE location.

A method of assessing a reported UE location includes: receiving, at a network entity, the reported UE location; obtaining, at the network entity, a first signal frequency difference indicating a first difference between a received frequency of a first signal received by the UE corresponding to a first transmit signal of a first transmit frequency transmitted from a first non-terrestrial-network node, and a received frequency of a second signal received by the UE corresponding to a second transmit signal of a second transmit frequency transmitted from a second non-terrestrial-network node that is separate from the first non-terrestrial-network node; and providing, by the network entity, a UE location assessment indication based on the first signal frequency difference and a second difference between an expected frequency of the first signal at the reported UE location and an expected frequency of the second signal at the reported UE location.

The radar device includes a transmission section, a reception antenna section, a reception section, a frequency analysis section, a first correlation matrix generation section, and an averaging process section. The transmission section transmits a chirp at cycle periods, the number of the transmitted chirps being a repetition number. The first correlation matrix generation section generates, for the chirps, first correlation matrixes based on complex information on long-distance bins in distance spectra corresponding to respective reception antennas that have received the identical chirp. The averaging process section performs, for the respective long-distance bins, an averaging process for the repetition number of first correlation matrixes generated so as to correspond to the long-distance bins, to generate average correlation matrixes.

The radar device includes a transmission section, a reception antenna section, a reception section, a frequency analysis section, a first correlation matrix generation section, and an averaging process section. The transmission section transmits a chirp at cycle periods, the number of the transmitted chirps being a repetition number. The first correlation matrix generation section generates, for the chirps, first correlation matrixes based on complex information on long-distance bins in distance spectra corresponding to respective reception antennas that have received the identical chirp. The averaging process section performs, for the respective long-distance bins, an averaging process for the repetition number of first correlation matrixes generated so as to correspond to the long-distance bins, to generate average correlation matrixes.

A radar system receives threat relevant data with pulses sufficiently separated to provide sufficient long-range imaging, analyzes the return data to identify features of the threat, and generate a second set of pulses to acquire more detailed, higher granularity data specific to the threat. The system may include an ESA that is configured for pulses in a higher frequency to acquire higher resolution data specific to the threat.

A radar system receives threat relevant data with pulses sufficiently separated to provide sufficient long-range imaging, analyzes the return data to identify features of the threat, and generate a second set of pulses to acquire more detailed, higher granularity data specific to the threat. The system may include an ESA that is configured for pulses in a higher frequency to acquire higher resolution data specific to the threat.

A radio communication terminal (UE2) configured to act as a radar receiver, comprising: a radio transceiver (323), logic (320) configured to communicate data, via the radio transceiver, on a radio channel (101), wherein the logic is further configured to obtain (233), via the radio transceiver, a radar probing request (230) to detect radio signal echoes; determine (235) a receive direction (Dir2) based on the request; control the radio transceiver to detect (242) a receive property of the radio signal echoes in said direction; and transmit (261), via the radio transceiver, data (260) associated with the detected receive property to a radio communication device (BS1, UE1).

A radio communication terminal (UE2) configured to act as a radar receiver, comprising: a radio transceiver (323), logic (320) configured to communicate data, via the radio transceiver, on a radio channel (101), wherein the logic is further configured to obtain (233), via the radio transceiver, a radar probing request (230) to detect radio signal echoes; determine (235) a receive direction (Dir2) based on the request; control the radio transceiver to detect (242) a receive property of the radio signal echoes in said direction; and transmit (261), via the radio transceiver, data (260) associated with the detected receive property to a radio communication device (BS1, UE1).

A radar method is described herein. In accordance with one embodiment the method includes receiving a plurality of chirp echoes of transmitted radar signals, generating a digital signal based on the plurality of chirp echoes, and calculating a range map based on the digital signal. The range map includes a plurality of values, each value is represented by an amplitude value and a phase value, and each value is associated with one frequency bin of a set of frequency bins and one chirp echo of the plurality of chirp echoes. The method further includes identifying chirp echoes which are affected by interference and determining, for one or more selected frequency bins, corrected phase values based on phase values that are associated with chirp echoes not identified as affected by interference.

A radar method is described herein. In accordance with one embodiment the method includes receiving a plurality of chirp echoes of transmitted radar signals, generating a digital signal based on the plurality of chirp echoes, and calculating a range map based on the digital signal. The range map includes a plurality of values, each value is represented by an amplitude value and a phase value, and each value is associated with one frequency bin of a set of frequency bins and one chirp echo of the plurality of chirp echoes. The method further includes identifying chirp echoes which are affected by interference and determining, for one or more selected frequency bins, corrected phase values based on phase values that are associated with chirp echoes not identified as affected by interference.