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    • 5. 发明公开
    • Pulse doppler radar device
    • IMPULS-Dopplerradarvorrichtung
    • EP2120062A2
    • 2009-11-18
    • EP09159791.4
    • 2009-05-08
    • FURUKAWA ELECTRIC CO., LTD.
    • Aoyagi, Yasushi
    • G01S13/18G01S13/58G01S13/93
    • G01S13/931G01S7/412G01S13/18G01S13/532G01S13/582G01S2007/4013G01S2013/9314G01S2013/9353
    • PROBLEM TO BE SOLVED: To provide a pulse Doppler radar device, that automatically judges a change of an operation mode and switches an operating condition therefore.
      SOLUTION: A judging and controlling part 110 comprises an operation mode judging unit 111, a pulse width selecting unit 112, and a band limiting width selecting unit 113, wherein the operation mode judging unit 111 receives a signal of a gear state from a predetermined controlling device in a vehicle, and then judges the operation mode thereof. Based on a result of the judgment at the operation mode judging unit 111, the pulse width selecting unit 112 and the band limiting width selecting unit 113 control a wide band impulse generating part 120 and a band width limiting part 150, respectively.
    • 要解决的问题:提供一种脉冲多普勒雷达装置,其自动判断操作模式的改变并因此切换操作状态。 解决方案:判断和控制部分110包括操作模式判断单元111,脉冲宽度选择单元112和频带限制宽度选择单元113,其中操作模式判断单元111从预定的控制 装置,然后判断其运行模式。 脉冲宽度选择单元112和频带限制宽度选择单元113基于操作模式判断单元111的判断结果分别控制宽带脉冲产生部分120和带宽限制部分150。
    • 6. 发明授权
    • RADAR SYSTEM
    • 雷达系统
    • EP0958507B1
    • 2009-01-21
    • EP98965963.6
    • 1998-11-17
    • RAYTHEON COMPANY
    • SHOLLENBERGER, Dean, L.
    • G01S13/532G01S13/64G01S13/18G01S13/70
    • G01S13/18G01S13/227
    • A radar system (10) for processing a series of radar returns to determine Doppler velocity of an object. Each one of the radar returns is produced in response to the object reflecting each one of a series of transmitted radar pulses. The series of radar returns is processed in a sequence of successive dwells. Each one of the dwells has a predetermined number of radar returns. The radar system includes a system clock (19) for producing a series of clock pulses. A range gate (26) is provided for sampling each one of a series of radar returns produced in response to each one of a series of transmitted radar pulses. The range gate has a time duration equal to an integer number of N clock pulse periods. A range gate positioning system (32) initiates the range gate a selected time, DELTA , after each one of the transmitted pulses. The positioning system determines the selected time, DELTA , as an integer number of M, clock pulse periods for a predetermined number of transmitted pulses and then subsequently changes such integer M to a different integer number M'. More particularly, the range gate positioning system determines the integer number M in accordance with a predetermined fractional offset, delta , of a clock pulse period T of the position of an object within th eclock pulse period T from a predetermined desired position within the clock pulse period T and the integer M' being determined in accordance with the Doppler velocity of the object. The range gate positioning system determiness M' in accordance with the number of PRIs per clock pulse period the object moves relative to the radar system and determines M in accordance with M=[1-( delta /T)]M'.