| 54 |
Title |
TI |
[EN] Device for two-dimensional imaging of scenes by microwave scanning |
| 71/73 |
Applicant/owner |
PA |
DEUTSCH ZENTR LUFT & RAUMFAHRT, DE
|
| 72 |
Inventor |
IN |
BERTHEL DOMINIK, DE
;
DILL STEPHAN, DE
;
JIROUSEK MATTHIAS, DE
;
PEICHL MARKUS, DE
|
| 22/96 |
Application date |
AD |
Mar 5, 2009 |
| 21 |
Application number |
AN |
38096209 |
|
Country of application |
AC |
US |
|
Publication date |
PUB |
Aug 30, 2011 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
DE
102008013066
20080306
|
| 51 |
IPC main class |
ICM |
H01Q 3/12
(2006.01)
|
| 51 |
IPC secondary class |
ICS |
H01Q 13/00
(2006.01)
H01Q 19/10
(2006.01)
H01Q 3/00
(2006.01)
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
G01S 13/426
G01S 13/89
H01Q 3/10
H01Q 3/16
H01Q 3/20
|
|
MCD main class |
MCM |
H01Q 3/12
(2006.01)
|
|
MCD secondary class |
MCS |
H01Q 13/00
(2006.01)
H01Q 19/10
(2006.01)
H01Q 3/00
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] For two-dimensional imaging of scenes through continuous passive or active microwave scanning, use is made of a fully mechanized directional antenna array comprising a main reflector (1), a primary radiator array (3) and a subreflector (2) having a small size in comparison to the main reflector and being tilted relative to the optical axis (7) of the directional antenna array. First drive means (8) are operative to rotate the subreflector (2) about the optical axis (7), and second drive means (17,18) are operative to move the total directional antenna array in a direction approximately vertical to the optical axis (7). The moving speed of the subreflector (2) is very high in comparison to that of the total directional antenna array. The shape of the main reflector (1), the shape of the subreflector (2), the primary radiator (3), the distance between primary radiator and subreflector and the distance between subreflector and main reflector as focusing parameters are attuned to each other in such a manner that, for a given scene distance, an optimum focusing and an optimum size of the field of view are achieved. The focusing parameters and the moving speeds of the two drive means are set in a manner allowing for a gapless, continuous scanning of the scene with the aid of the focusing spot (12) moving at the scene distance. Applicability in remote investigation, particularly in earth observation and in safety technology. |
| 56 |
Cited documents identified in the search |
CT |
US000003209352A
US000005777573A
US000006259414B1
|
| 56 |
Cited documents indicated by the applicant |
CT |
EP000000002982A1
EP000000514886A1
US000004305075A
US000006943742B2
US020080211713A1
WO002005017559A2
WO002005085903A1
WO002007028472A1
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
Martin et al., "High resolution passive millimeter-wave security screening using few amplifiers," Proc. of SPIE, vol. 6548, 2007, pp. 654806-1 to 654806-10. 1
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
G01V 8/00
H01Q 13/00
H01Q 19/10
H01Q 3/10
H01Q 3/12
H01Q 3/16
H01Q 3/20
|
