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    • 1. 发明申请
    • A METHOD AND RADAR SYSTEM FOR REPETITION JAMMER AND CLUTTER SUPPRESSION
    • 一种用于重复的方法和雷达系统JAMMER和CLUTTER抑制
    • WO2012067557A1
    • 2012-05-24
    • PCT/SE2010/051277
    • 2010-11-19
    • SAAB ABFALK, Kent
    • FALK, Kent
    • G01S7/36G01S1/40
    • G01S7/36G01S7/2813
    • 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.
    • 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。
    • 3. 发明申请
    • SCANABLE SPARSE ANTENNA ARRAY
    • 可扫描天线阵列
    • WO2005053097A1
    • 2005-06-09
    • PCT/SE2003/001843
    • 2003-11-27
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)SVENSSON, BengtFALK, KentENGSTRÖM, Ulrika
    • SVENSSON, BengtFALK, KentENGSTRÖM, Ulrika
    • H01Q21/00
    • H01Q21/005H01Q1/523H01Q1/525H01Q3/30H01Q13/22
    • A sparse array antenna is disclosed. The antenna comprises series-fed antenna array columns tuned to a respective transmit and receive frequency. The transmitting and receiving radiation elements are formed with a given distance between each transmitting radiator element and each receiving radiator element, and the series-fed antenna columns are arranged in parallel, perpendicular to a symmetry line forming a symmetric interleaved transmit/receive array. Furthermore the receiving array columns operate as parasitic elements in a transmit mode and transmitting array columns operate as a parasitic elements in a receive mode, thereby reducing creation of grating lobes. The created sparse array antenna may further be arranged to be scanable to also provide reduced sidelobes entering visual space when scanning the main radiation lobe from an off boresight direction. Typically the series-fed array columns may be formed as extended ridged slotted wave-guides tuned to a respective transmitting or receiving frequency.
    • 公开了一种稀疏阵列天线。 该天线包括被调谐到相应发射和接收频率的串联馈送天线阵列列。 发射和接收辐射元件在每个发射辐射体元件和每个接收辐射体元件之间以给定的距离形成,并且串联馈送的天线列与垂直于形成对称交错的发射/接收阵列的对称线平行布置。 此外,接收阵列列以发射模式作为寄生元件运行,并且发射阵列列作为接收模式中的寄生元件运行,从而减少了栅瓣的产生。 所创建的稀疏阵列天线可进一步被布置成可扫描,以便在从远视线方向扫描主辐射波瓣时还提供进入视觉空间的减少的旁瓣。 通常,串联馈送的阵列列可以形成为被调谐到相应的发射或接收频率的延伸的有脊的时隙波导。
    • 4. 发明申请
    • A RADIO FREQUENCY EMITTER DETECTION AND LOCATION METHOD AND SYSTEM
    • 无线电频率发射器检测和位置方法与系统
    • WO2008002205A1
    • 2008-01-03
    • PCT/SE2006/000782
    • 2006-06-27
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)FALK, Kent
    • FALK, Kent
    • G01S5/06
    • G01S5/06G01S5/0221G01S5/0278
    • The present invention relates to a radio frequency emitter detection and location method where a number N, the number N being at least three, of receiving units (28, 29, 30, 31 ), using the same bandwidth B, centre frequency f c and measurement time duration T, are used (36) for receiving signals S 0 , S 1 ... S N-1 from at least one emitter (27), the method comprising the steps: calculating (37) a correlation function c between the received signals s 0 , s 1 ... S N-1 , using one of the received signals S0 as a reference, where HOS (Higher Order Statistics) is used for performing said calculation of the correlation c; and using (38) said correlation function results to form volumes of probabilities in a subset of an N-1 -dimensional space of information regarding the location of a certain emitter (27), where each correlation function result in said subset corresponds to a single point in the physical space. The present invention also relates to a corresponding system.
    • 本发明涉及使用相同带宽B,中心频率f ,所述方法包括以下步骤:计算(37)所述接收信号s 1,...,S 1之间的相关函数c。 使用接收信号S0中的一个作为参考,其中使用HOS(高阶统计量)来执行相关性c的计算; 并且使用(38)所述相关函数结果在关于某个发射器(27)的位置的信息的N-1维空间的子集中形成概率体积,其中所述子集中的每个相关函数对应于单个 指向物理空间。 本发明还涉及相应的系统。
    • 5. 发明申请
    • IMPROVED WIDEBAND RADAR
    • 改进的宽带雷达
    • WO2006041338A1
    • 2006-04-20
    • PCT/SE2004/001460
    • 2004-10-13
    • TELEFONAKTIEBOLAGET L M Ericsson (publ)FALK, Kent
    • FALK, Kent
    • G01S13/02
    • G01S13/0209G01S13/532
    • The invention refers to a method and device for wideband radar, the method comprising: -generating a wideband signal (1, 6) with a bandwidth B; -copying the wideband signal (1, 6); -transmitting the wideband signal (6'); -receiving a returned echo signal (11) from the transmitted signal (6'); -dividing the copied signal into a number, N f , of subsequent frequency bands b; - manipulating the copied and divided signal into an anticipated signal (10) by adding a number N d of anticipated delays and a number of N D Doppler stretches to the copied and divided signal for each N f subsequent frequency band b; -dividing the received signal (17) into a number, N f , of subsequent frequency bands b;- correlating corresponding frequency bands in the divided received signal (17) and the anticipated signal (10) giving N d N D correlated signals (19) for determining range (R) to a target and velocity (v) of the target.
    • 本发明涉及一种宽带雷达的方法和装置,该方法包括: - 生成具有带宽B的宽带信号(1,6); - 复制宽带信号(1,6); - 发射宽带信号(6'); - 从传送的信号(6')接收返回的回波信号(11); 将复制的信号分割成数字,N
    • 6. 发明申请
    • A RADAR SYSTEM COMPRISING AT LEAST TWO SPATIALLY SEPARATED ANTENNA UNITS
    • 包含至少两个空间分离的天线单元的雷达系统
    • WO2007091929A1
    • 2007-08-16
    • PCT/SE2006/000175
    • 2006-02-09
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)FALK, Kent
    • FALK, Kent
    • G01S13/00G01S13/02G01S13/87
    • G01S13/878
    • A radar system (1), comprising at least two spatially separated antenna units (U1, U2, U3, U4, U5, U6, U7, U8, U9; U1O, U11, U12, U13, U14, U15, U16, U17, U18), each comprising one antenna (2, 3, 4, 5, 6, 7, 8, 9, 21; 36, 37, 38, 39, 40, 41, 42, 43, 56). Each antenna unit (U1, U2, U3, U4, U5, U6, U7, U8, U9; U1 O, U11, U12, U13, U14, U15, U16, U17, U18) comprising a signal generator (13, 14, 15, 16, 17, 18, 19, 20; 57) connected to an antenna (2, 3, 4, 5, 6, 7, 8, 9; 56) constitutes a transmitting antenna unit (U1, U2, U3, U4, U5, U6, U7, U8; U18), and each antenna unit (U9; U10. U11, U12, U13, U14, U15, U16, U17) comprising a receiver (22; 47, 48, 49, 3 50, 51, 52, 53, 54) connected to an antenna (21; 36, 37, 38, 39, 40, 41, 42, 43) constitutes a receiving antenna unit (U9; U10, U11, U12, U13, U14, U15, U16, U17). At least one receiving antenna unit (U9; U10, U11, U12, U13, U14, U15, U16, U17) is arranged for receiving at least one reflected signal, comprising signals transmitted from at least one transmitting antenna unit (U1, U2, U3, U4, U5, U6, U7, U8; U18), having been reflected from at least one object (24), where the number of antenna units (U1, U2, U3, U4, U5, U6, U7, U8, U9; U10, U11, U12, U13, U14, U15, U16, U17, U18) exceeds two. A processing unit (23) is arranged to perform a correlation calculation, comparing at least one received signal with a set of mathematically manipulated copies. From said set, there is only one match for each reflected signal. The present invention also relates to corresponding methods.
    • 一种雷达系统(1),包括至少两个空间分离的天线单元(U1,U2,U3,U4,U5,U6,U7,U8,U9; U1O,U11,U12,U13,U14,U15,U16,U17, U18),每个天线包括一个天线(2,3,4,5,6,7,8,9,21; 36,37,38,39,40,41,42,43,56)。 每个天线单元(U1,U2,U3,U4,U5,U6,U7,U8,U9; U1 O,U11,U12,U13,U14,U15,U16,U17,U18)包括信号发生器(13,14, 连接到天线(2,3,4,5,6,7,8,9,56)的天线单元(U1,U2,U3,U4)构成发射天线单元(U1,U2,U3,U4 ,U5,U6,U7,U8; U18),以及包括接收器(22; 47,48,49,35,50)的每个天线单元(U9; U10,U11,U12,U13,U14,U15,U16,U17) 连接到天线(21; 36,37,38,39,40,41,42,43)的天线单元构成接收天线单元(U9; U10,U11,U12,U13,U14,U15 ,U16,U17)。 至少一个接收天线单元(U9; U10,U11,U12,U13,U14,U15,U16,U17)被布置用于接收至少一个反射信号,包括从至少一个发射天线单元(U1,U2, (U3,U4,U5,U6,U7,U8; U18),从至少一个物体(24)反射,其中天线单元(U1,U2,U3,U4,U5,U7,U8; U8, U9; U10,U11,U12,U13,U14,U15,U16,U17,U18)超过2。 处理单元(23)被布置为执行相关计算,将至少一个接收到的信号与一组数学操作的副本进行比较。 从所述集合,每个反射信号只有一个匹配。 本发明还涉及相应的方法。
    • 10. 发明申请
    • A MULTIPLE-INPUT MULTIPLE-OUTPUT RADAR SYSTEM
    • WO2022115018A1
    • 2022-06-02
    • PCT/SE2021/051159
    • 2021-11-22
    • SAAB AB
    • FALK, Kent
    • G01S13/00G01S7/02G01S13/931
    • 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.