公开(公告)号：EP4113157A1

公开(公告)日：2023-01-04

申请号：EP22182680.3

申请日：2022-07-01

申请人： Rockwell Collins, Inc.

发明人： SISHTLA, Venkata ,  WANG, Xingming ,  FINLEY, Jeffery A.

IPC分类号： G01S7/10 ,  G01S7/41 ,  G01S13/95 ,  G01S13/10 ,  G01S13/02

摘要： A system and method for ice crystal detection and qualification are disclosed. The system for ice crystal detection may include an aircraft weather radar and processing circuitry. The aircraft weather radar may perform scans at one or more elevations at successive times. The processing circuitry may calculate power and reflectivity values based on the scans. The processing circuitry may further compare the power and reflectivity values to threshold values to determine the presence of ice water content. The processing circuitry may display different colors on a display for areas in which the power and reflectivity values are lower than the threshold values.

公开(公告)号：EP4361675A1

公开(公告)日：2024-05-01

申请号：EP23206522.7

申请日：2023-10-27

申请人： Rockwell Collins, Inc.

发明人： SISHTIA, Venkata A. ,  WANG, Xingming ,  WEST, James B. ,  TEAGUE, Jacob G.

IPC分类号： G01S13/44 ,  G01S13/58 ,  G01S13/933 ,  G01S13/95 ,  G01S7/02 ,  G01S7/292 ,  H01Q21/06 ,  H01Q25/02 ,  G01S13/02

CPC分类号： G01S2013/025420130101 ,  G01S13/4445 ,  G01S13/4463 ,  G01S13/933 ,  G01S7/023 ,  G01S7/292 ,  G01S13/953 ,  H01Q25/02 ,  H01Q21/061 ,  G01S13/582

摘要： A system and method for distinguishing targets of interest from main lobe clutter and sidelobe clutter includes an ESA or AESA (102) divided into subarrays (104, 106, 108, 110). A sum beam power profile is produced via one or more scans of the subarrays, and a difference beam power profile is produced via calculations involving the subarrays. A comparison of the sum beam power profile and the difference beam power profile accentuates signal power disparities between targets of interest and clutter. A threshold is then applied to isolate targets of interest. Different difference beam power profiles may be used for elevation comparisons and azimuth comparisons. Alternatively, subarrays may be selected such that the same difference beam power profile may be used for both elevation and azimuth. Scans may be time multiplexed such that data from different scans may be used to produce the sum beam power profile, the difference beam power profile, or both.

公开(公告)号：EP3851877A1

公开(公告)日：2021-07-21

申请号：EP21151909.5

申请日：2021-01-15

申请人： Rockwell Collins, Inc.

发明人： WANG, Xingming ,  SCHOEPSKE, Anthony

IPC分类号： G01S13/95 ,  G01S7/40

摘要： A system and method for ground calibration of an aircraft weather radar (WxR) (100) employs a calibrated WxR already flight tested on a reference aircraft to generate a ground reference map from a specific ground position on a specific heading. A WxR alignment tool (102) receives the ground reference map and compares it to an uncalibrated ground map generated by an uncalibrated WxR in the same ground position and on the same heading. Once compared, the alignment tool determines a delta between the ground reference map and the uncalibrated ground map and determines offset values in pitch, roll, and elevation to reduce the delta to a desired operational value and make the maps nearly identical. The alignment tool then applies to offset values to the uncalibrated WxR to calibrate the WxR for operational use.