6 results about "Space time frequency" patented technology

The application discloses a space-time-frequency wave number domain synchronous extrusion superimposed dense channel reservoir characterization method, which comprises the following steps: S1, inputting original seismic data s(t, x) to be analyzed, wherein x is the number of channels, and t is time; S2, obtaining short-time Fourier transform V2(t, x, omega, k) of the signal by using a Gaussian window function g(t, x), wherein omega is frequency, and k is wave number; S3, calculating an instantaneous frequency and an instantaneous wave number estimation of the signal according to S2; S4, defining an extrusion operator TDSTO according to S3; S5, constructing a space-time-frequency wave number domain synchronous extrusion transform characterization method TDSST(t, omega, x, k) according to the extrusion principle; S6, fixing the wave number by maximizing the energy of TDSST, so as to obtain a TDSST time-space-frequency domain three-dimensional data body TDSST(t, x, omega, k(t, x, omega)); and S7, performing feature extraction of frequency f0 in S6, so as to obtain a single-frequency profile to characterize the morphological structure characteristics of a complex superimposed dense channel sandstone reservoir. The application can provide a space-time reservoir morphological characterization method considering the lateral characteristics of a complex superimposed dense channel sandstone.

A wireless transmit / receive unit (WTRU) and method for synchronizing temporal-spatial-frequency (TSF) information for channel state information (CSI) feedback, comprising receiving configuration information which comprises network (NW)-assistance information associated with NW-side TSF sync information and a condition for detecting misalignment between WTRU-side TSF sync information and the NW-side TSF sync information. A misalignment event is determined to occur between the WTRU-side TSF sync information and the NW-side TSF sync information based on the NW-assistance information and the condition for detecting misalignment. A misalignment mitigation action is determined responsive to the determining that the misalignment event has occurred. The misalignment mitigation action comprising resetting the WTRU-side TSF sync information or retransmitting uplink control information (UCI). A report is sent. The report comprises an indication that a misalignment event between the WTRU-side TSF sync information and the NW-side TSF sync information has occurred and an indication of the misalignment mitigation action.

A method may be performed by a wireless transmit / receive unit (WTRU), including receiving a temporal-spatial-frequency (TSF) buffer configuration associated with multi-layer buffer management for a plurality of buffers for eigenvector-based TSF CSI compression. The TSF buffer configuration may include a plurality of TSF buffer actions and conditions associated with the plurality of TSF buffer actions. Channel state information (CSI) reference signal (RS) transmissions associated with one or more transmission layers may be received. The plurality of buffers may be updated based on the CSI-RS transmissions. A TSF buffer action may be determined for each of the plurality of buffers based on the TSF buffer configuration. An indication of the TSF buffer action for each of the plurality of buffers may be sent.

The application discloses a kind of spatio-temporal frequency decoupling and frequency domain enhancement cross-modal video confrontation disturbance generation method, belong to computer vision technical field, including steps: obtaining the video frame sequence containing clean image, initialize each frame disturbance;According to clean image and disturbance, generate confrontation frame and generate enhanced confrontation frame;The intermediate features of clean image and enhanced confrontation frame are extracted respectively;Constitute spatial high-frequency component and time low-frequency component;Constitute joint loss;With video frame sequence to minimize joint loss update disturbance to generate the optimal disturbance of each frame;With optimal disturbance generation optimal confrontation frame constructs confrontation video.The application is through the multi-component feature constraint of spatio-temporal frequency decoupling and optimization stage frequency domain-scale joint enhancement, effectively overcome the deficiency of existing frame-by-frame cross-modal method in migration stability and representation destruction comprehensiveness, can better meet the actual demand in video model security and robustness evaluation.

A method may be performed by a wireless transmit / receive unit (WTRU), including receiving a temporal-spatial-frequency (TSF) buffer configuration associated with multi-layer buffer management for a plurality of buffers for eigenvector-based TSF CSI compression. The TSF buffer configuration may include a plurality of TSF buffer actions and conditions associated with the plurality of TSF buffer actions. Channel state information (CSI) reference signal (RS) transmissions associated with one or more transmission layers may be received. The plurality of buffers may be updated based on the CSI-RS transmissions. A TSF buffer action may be determined for each of the plurality of buffers based on the TSF buffer configuration. An indication of the TSF buffer action for each of the plurality of buffers may be sent.

A wireless transmit / receive unit (WTRU) and method for synchronizing temporal-spatial-frequency (TSF) information for channel state information (CSI) feedback, comprising receiving configuration information which comprises network (NW)-assistance information associated with NW-side TSF sync information and a condition for detecting misalignment between WTRU-side TSF sync information and the NW-side TSF sync information. A misalignment event is determined to occur between the WTRU-side TSF sync information and the NW-side TSF sync information based on the NW-assistance information and the condition for detecting misalignment. A misalignment mitigation action is determined responsive to the determining that the misalignment event has occurred. The misalignment mitigation action comprising resetting the WTRU-side TSF sync information or retransmitting missing uplink control information (UCI). A report is sent. The report comprises an indication that a misalignment event between the WTRU-side TSF sync information and the NW-side TSF sync information has occurred and an indication of the misalignment mitigation action.