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APQ-181雷达,用于B2轰炸机
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The world's stealthiest radar, the APQ-181 is a low probability of intercept, all-weather system that enables the B-2 Spirit stealth bomber to penetrate the most sophisticated air defenses.世界隐秘的雷达,APQ-181是一种低截获概率,全天候系统,使B-2幽灵隐形轰炸机渗透到最先进的防空系统。 The AN/APQ-181 radar system enables the unique combination of stealth, range, payload, and precision weapons delivery capabilities of the US Air Force B-2 Spirit stealth bomber. AN/APQ-181雷达系统,使独特的组合,隐形,航程,有效载荷和精确制导武器,美国空军B-2幽灵隐形轰炸机的交付能力。 The radar currently employs a passive, two-dimensionally scanned antenna, with a mode suite that provides detection and precision engagement of time-critical targets.目前该雷达采用被动的,两个三维扫描天线,用一个模式套件,提供时间关键目标的精确检测和参与。 8 ^/ H$ J( s0 i/ m# u3 C" N8 S
9 ~0 H' X. L2 Z$ kWhile its AN/APQ-181 attack radar possesses a maritime search mode, the demise of the AGM-137 TSSAM denied the B-2A a suitable weapon for anti-shipping strike.虽然其AN/APQ-181攻击雷达具有海上搜索模式,消亡的AGM-137 TSSAM否认的B-2A合适的武器为反航运罢工。 While in theory it could be adapted to deliver naval mines in the manner performed by the B-52G/H and the B-1B, ensuring accurate deliveries requires a low altitude drop with concomitant potential for exposure, and a reduction in combat radius.虽然在理论上,它可以适应的方式进行的B-52G / H和的B-1B提供水雷,确保准确的交货需要伴随潜在暴露与低海拔的下降,减少作战半径。 The same difficulties would also arise with carrying the AGM-84 Harpoon, which would also require a weapon specific interface.同样的困难也将出现携带AGM-84鱼叉,这也需要特定的武器接口。 , ?$ W$ E4 z$ N' l" N% G: {" C
' A- e! h2 ]- Y) Y! M& b; gThe AN/APQ-181, designed specifically for the Northrop Grumman B-2 Spirit stealth bomber, is a multimode radar system operating in the Ku-band (12.5 to 18 GHz). AN/APQ-181,诺斯罗普·格鲁门公司的B-2幽灵隐形轰炸机的设计,是多模雷达系统运行在Ku波段(12.5至18 GHz)。 The radar features 21 separate modes for terrain-following and terrain-avoidance, navigation system updates, target search, location, identification and acquisition and weapon delivery.该雷达具有21单独的模式地形跟踪和地形回避,导航系统更新,目标搜索,定位,识别和采集和武器交付。 The APQ-181 is a completely redundant modular system which employs two electronically scanned antennas, sophisticated software modes and advanced Low Probability of Intercept (LPI) techniques that match the aircraft's overall stealth qualities. APQ-181是一个完全冗余的模块化系统,采用电子扫描天线,先进的软件模式和先进的低概率拦截(LPI)技术,符合飞机的整体隐身素质。 $ q3 U/ L( Q7 @8 l! W% `
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The LPI approach used is understood to be a collection of individually effective design and operating techniques that, when integrated, greatly diminish the effectiveness of radio frequency emitter location sensor systems.使用的LPI的做法被理解为一个单独有效地设计和操作技术的集合,整合,大大减少了无线电频率发射器位置传感器系统的有效性。 LPI techniques include unique performance features built-in to the hardware and operated under radar mode control.的LPI技术包括独特的性能特点内置的硬件和雷达模式控制下运作。
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To meet reliability specifications and provide for operational redundancy, the APQ-181 provides two separate radar sets, each consisting of five Line-Replaceable Units (LRUs): antenna, transmitter, Radar Signal Processor (RSP), Radar Data Processor (RDP) and receiver/exciter, with all but the antennas able to function for either or both radar units.为了满足可靠性规格,并提供业务冗余,APQ-181提供了两个独立的雷达装置,每五线可更换单元(LRU的)组成:天线,发射机,雷达信号处理器(RSP),雷达数据处理器(RDP)和接收机/激励器,所有的天线能够发挥作用的一方或双方雷达部队。 These LRUs weigh 955 kg and have a volume of 1.485 m3.The LRUs are installed in the aircraft in three zones.这些LRUS重达955公斤,体积1.485 m3.The LRUS安装在飞机在三个区域。 Each 260 kg antenna is mounted behind a large radome some 8 ft outboard of the aircraft centreline, just below the flying wing's leading edges.每260公斤的天线安装约8英尺的飞机中心线的外侧,仅低于飞翼的领先优势,后面的大罩。 Antenna locations are marked by large, slightly darker, rectangular patches visible on the underside of the aircraft.天线位置的标志是大,稍深,可见飞机底部的长方形补丁。 4 [. l! w& C+ D
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