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1. 发明申请

WO2012067557A1 A METHOD AND RADAR SYSTEM FOR REPETITION JAMMER AND CLUTTER SUPPRESSION 审中-公开
标题翻译：一种用于重复的方法和雷达系统JAMMER和CLUTTER抑制
公开(公告)号：WO2012067557A1
公开(公告)日：2012-05-24
申请号：PCT/SE2010/051277
申请日：2010-11-19
申请人： SAAB AB , FALK, Kent
发明人： FALK, Kent
IPC分类号： G01S7/36 , G01S1/40
CPC分类号： G01S7/36 , G01S7/2813
摘要： A method for suppressing repetition jammer signals and/or clutter signals by using a radar system wherein said radar system comprises, at least one wideband arbitrary waveform generator, for creating arbitrary waveforms, and at least one antenna operating with wide instantaneous bandwidth, enabling direction dependent waveform radiation, wherein said method comprises the steps of transmitting different waveforms in different directions; adapting transmitted waveforms in different directions depending on received waveforms such that a normalised signal to noise-jammer ratio, NSNJR, is maximized; and thereby providing received signals from repetition jammers and/or clutter that are substantially orthogonal to a received signal from a target; thereby achieving suppression of the repetition jammers and/or clutter.
摘要翻译：一种通过使用雷达系统来抑制重复干扰信号和/或杂波信号的方法，其中所述雷达系统包括用于创建任意波形的至少一个宽带任意波形发生器，以及至少一个以宽瞬时带宽工作的天线，使得能够取向波形辐射，其中所述方法包括在不同方向上发送不同波形的步骤; 根据接收到的波形来适应不同方向的发射波形，使得归一化信号与噪声干扰比（NSNJR）最大化; 从而提供与来自目标的接收信号基本上正交的重复干扰和/或杂波的接收信号; 从而实现对重复干扰的抑制和/或杂乱。

2. 发明申请

WO2022115018A1 A MULTIPLE-INPUT MULTIPLE-OUTPUT RADAR SYSTEM 审中-公开
公开(公告)号：WO2022115018A1
公开(公告)日：2022-06-02
申请号：PCT/SE2021/051159
申请日：2021-11-22
申请人： SAAB AB
发明人： FALK, Kent
IPC分类号： G01S13/00 , G01S7/02 , G01S13/931
摘要： The present disclosure relates to a multiple-input multiple-output, MIMO radar system (1) comprising an antenna (2) comprising at least two sparse transmit arrays (3, 4), each sparse transmit array (3, 4) comprising a plurality of antenna elements (5). The antenna elements (5) of each sparse transmit arrays (3, 4) are at least partially overlapping with the antenna elements (5) of the other sparse transmit arrays (3, 4) of the at least two sparse transmit arrays (3, 4). Further, there is control circuitry (7) connected to the antenna (2). The control circuitry (7) is configured to transmit a signal having a waveform by means of each sparse transmit array (3, 4), wherein the waveform of each signal is substantially orthogonal relative to a waveform of each other signal of each other sparse transmit arrays (3, 4) of the at least two sparse transmit arrays (3, 4). Furthermore, the waveforms of each signal together form an interference pattern, and wherein a sum of all interference patterns of all of the signals illuminate an area of interest.

3. 发明申请

WO2020085962A1 RADAR SYSTEM FOR JAMMED ENVIRONMENTS 审中-公开
公开(公告)号：WO2020085962A1
公开(公告)日：2020-04-30
申请号：PCT/SE2018/051089
申请日：2018-10-25
申请人： SAAB AB
发明人： FALK, Kent
IPC分类号： G01S7/36 , G01S13/26 , G01S13/87 , H01Q3/26
摘要： The present invention relates to a radar system (1) and a method (100, 200) for maintaining radar performance of a radar system in a jammed environment. The radar system (1) has a main antenna arrangement (2) for transmitting and/or receiving electromagnetic waves. The main antenna arrangement comprises at least one main antenna element and at least one main electronics module for transmitting and/or receiving signals to/from the at least one main antenna element, wherein the main antenna arrangement is configured to emit a radiation pattern comprising a main lobe and a side lobe area. The system further has an auxiliary antenna arrangement (5) for transmitting and/or receiving electromagnetic waves, where the auxiliary antenna arrangement comprises at least one auxiliary antenna element and at least one auxiliary electronics module for transmitting and/or receiving signals to/from the at least one auxiliary antenna element. Moreover, the system has a controller (8) connected to the main antenna arrangement and to the auxiliary antenna arrangement. The controller (8) is configured to transmit a first radar waveform from said main antenna element, and transmit a second radar waveform from the auxiliary antenna element, and wherein the first radar waveform and the second radar waveform have a normalized cross-correlation factor below 1.

4. 发明申请

WO2011008146A1 METHOD AND WIDEBAND ANTENNA SYSTEM TO MINIMISE THE INFLUENCE OF INTERFERENCE SOURCES 审中-公开
标题翻译：方法和宽带天线系统，以最小化干扰源的影响
公开(公告)号：WO2011008146A1
公开(公告)日：2011-01-20
申请号：PCT/SE2009/050905
申请日：2009-07-16
申请人： SAAB AB , FALK, Kent
发明人： FALK, Kent
IPC分类号： G01S7/28 , G01S7/36 , H01Q3/26
CPC分类号： G01S7/36 , G01S7/023 , G01S2013/0245 , H01Q3/2617
摘要： The invention provides a method to minimise the influence of interference sources by control of the Signal to Noise/interference Ratio, SNR, of a wideband antenna system connected to an electronic system. The wideband antenna system comprises at least one array of at least two antenna elements/sub arrays. The SNR control comprises establishing of cancellation directions for interfering frequencies in the antenna pattern in the direction of interference sources. The wideband antenna system is operational over a system bandwidth and operates with an instantaneous bandwidth B. Estimation of interference source parameters is performed in an evaluation process. The invention also provides a wideband antenna system implementing the method.
摘要翻译：本发明提供了一种通过控制连接到电子系统的宽带天线系统的信噪比/ SNR来最小化干扰源的影响的方法。宽带天线系统包括至少两个天线元件/子阵列的阵列。 SNR控制包括在干扰源的方向上建立天线方向上的干扰频率的消除方向。宽带天线系统可在系统带宽上工作，并以瞬时带宽B进行操作。在评估过程中执行干扰源参数的估计。本发明还提供实现该方法的宽带天线系统。

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