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11.发明授权WIDEBAND TRANSMITTER/RECEIVER ARRANGEMENT FOR MULTIFUNCTIONAL RADAR AND COMMUNICATION 有权BREITBANDSENDER- /接待安排，多功能雷达和通信
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公开(公告)号：EP2394184A1
公开(公告)日：2011-12-14
申请号：EP09839776.3
申请日：2009-02-06
Applicant: Saab AB
Inventor： HELLSTEN, Hans , ANDERSSON, Lars-Gunnar
IPC: G01S13/90
CPC classification number: G01S13/90 , G01S13/0209 , G01S13/28 , G01S2013/9041
Abstract: The invention provides a radar system for a Synthetic Aperture Radar, SAR, comprising an arrangement of at least one transmitter, two receivers, two antennas and signal processing means located on a platform. The platform is arranged to move over ground and arranged to transmit a known signal shape and receive signals reflected from the ground. The received signals are used to produce a SAR image of the ground. The SAR image comprises a number of resolution cells. The radar system is further arranged to operate in a frequency band with a centre frequency
f
c and with a wide bandwidth
B of at least one octave wherein the radar system comprises a first and a second antenna having a length of less than half the wavelength of the centre frequency
f
c . The radar system is further arranged for: • a radar system transfer function
F
f to be flat over the frequency band
B and • one-sided beam forming with wideband antenna gain. The invention also provides a corresponding method.-
公开(公告)号：EP1965223A1
公开(公告)日：2008-09-03
申请号：EP07446004.9
申请日：2007-03-02
Applicant: SAAB AB
Inventor： HELLSTEN, Hans
CPC classification number: G01S13/9035 , G01S7/025 , G01S13/003 , G01S13/885
Abstract: The present invention can be summarized by use of a diffraction limited SAR giving large integration angle and a short depth of field which gives that energy from underground targets is focused independently at different depths to enable 3d imaging. The radar device according to the invention should be implemented by considering the following parameters: Choice of the appropriate illumination geometry, i.e. elevation angle θ, and the appropriate use of low frequency diffraction limited SAR processing to obtain 3D imaging, and the choice of an appropriately low radar frequency.
Abstract translation: 本发明可以通过使用具有大的积分角和短的景深的衍射极限SAR来进行总结，这使得地下目标的能量独立地聚焦在不同的深度以实现3D成像。 应通过考虑以下参数来实现根据本发明的雷达装置：选择适当的照明几何，即仰角¸，以及适当使用低频衍射限制SAR处理以获得3D成像，以及适当选择 低雷达频率。
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公开(公告)号：EP3580582A1
公开(公告)日：2019-12-18
申请号：EP18751366.8
申请日：2018-02-05
Applicant: SAAB AB
Inventor： HELLSTEN, Hans , DAMMERT, Patrik
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Patent Agency Ranking
公开(公告)号：EP2394184B1
公开(公告)日：2017-08-16
申请号：EP09839776.3
申请日：2009-02-06
Applicant: Saab AB
Inventor： HELLSTEN, Hans , ANDERSSON, Lars-Gunnar
IPC: G01S13/90
CPC classification number: G01S13/90 , G01S13/0209 , G01S13/28 , G01S2013/9041
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公开(公告)号：EP1886165B1
公开(公告)日：2010-12-15
申请号：EP05748755.5
申请日：2005-05-31
Applicant: Saab AB
Inventor： DAGÅS, Nils , HELLSTEN, Hans , ELFSTRÖM, Torbjörn
CPC classification number: G01S13/9035 , G01S13/24 , G01S13/26 , G01S2007/2883
Abstract: A radar device (100) comprising transmit and receive parts, and a control unit (CU). The transmit part includes means (WG) for generating a signal within a certain band, and the receive part comprises a filter (AAF), an AD-converter (ADC) and a Fourier transform unit (FFT1). The transmit part generates a group of signals, each having a first bandwidth between a first and a second frequency, in such a way that a larger bandwidth (B1-B4) is covered by the group. The receive part is open over said larger bandwidth (B1-B4) during reception of each signal in said group, and the transmit part comprises means (PAD, FFT2) for creating FFT-copies of the received signals and means (CONJ) for creating conjugates of said copies. The receive and transmit parts comprise means (EXTR) for extracting data from the FFT from the first bandwidth covered by a received signal, and the radar device comprises means (DIFF) for correlating said extracted FFT-data.
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18.发明公开
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公开(公告)号：EP3688496A1
公开(公告)日：2020-08-05
申请号：EP18779066.2
申请日：2018-09-19
Applicant: SAAB AB
Inventor： DAMMERT, Patrik , HELLSTEN, Hans
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公开(公告)号：EP1965223B1
公开(公告)日：2013-12-18
申请号：EP07446004.9
申请日：2007-03-02
Applicant: SAAB AB
Inventor： HELLSTEN, Hans
CPC classification number: G01S13/9035 , G01S7/025 , G01S13/003 , G01S13/885
Abstract: The present invention can be summarized by use of a diffraction limited SAR giving large integration angle and a short depth of field which gives that energy from underground targets is focused independently at different depths to enable 3d imaging. The radar device according to the invention should be implemented by considering the following parameters: Choice of the appropriate illumination geometry, i.e. elevation angle ¸, and the appropriate use of low frequency diffraction limited SAR processing to obtain 3D imaging, and the choice of an appropriately low radar frequency.
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