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TPS-59相控阵雷达是霍克导弹防御系统的主要监视、探测和跟踪雷达。1992年7月,美国海军陆战队开始对该雷达进行改进。主要改进包括用新的设备代替雷达所有电子控制设备和用新的分布式信号处理系统代替原来用于处理目标数据的海军UYK-7标准计算机。新的信号处理系统处理跟踪数据的能力将比老的计算机快5倍,新的信号处理软件将使雷达能够跟踪在高空飞行的战术弹道导弹和邻近低空飞行的战术弹道导弹。这些改进将使雷达的监视距离从550千米提高到740千米。为了对来袭的战术弹道导弹作出实时的反应,TPS-59雷达的跟踪数据将通过JTIDS系统直接转发给ADCP。ADCP装在高度机动的多用途轮式车上,并配备有商用的SunSparc计算机工作站,把跟踪数据转换成霍克导弹的发射指令,指挥霍克导弹连通信台控制一部或多部霍克导弹发射车拦截目标。反导型霍克导弹的尺寸和重量与先前的霍克导弹相同,但采用了新的战斗部和引信。发射车也进行了改进,以提高机动性能。霍克导弹为一级固体导弹,弹体长5.08米,弹径0.37米,发射质量640千克,制导系统采用X波段连续波单脉冲半主动雷达导引头,最大射程35千米,最大射高18千米。
最新改型的霍克导弹能够防御射程为70~120千米的近程战术弹道导弹,如俄罗斯的蛙-7火箭和SS-21导弹,可弥补现有爱国者导弹系统不能有效防御这些导弹的漏洞,同时对射程300千米的飞毛腿导弹也具有一定的拦截能力。作为应急系统,美国海军陆战队在1995年开始部署反导型霍克导弹样机系统,1996年部署了实战系统。
1994年9月19~21日的3天内,美国海军陆战队在白沙导弹靶场对新改进的霍克导弹防御系统进行了靶试,目的是鉴定TPS-59雷达跟踪长矛导弹的能力,考核改进的霍克导弹用AN/TPS-59雷达获取预警信息的速度,检查该系统是否能实际击落长矛战术弹道导弹。试验中,海军陆战队共完成了5次实弹射击,改型霍克导弹成功地拦截了两枚长矛导弹,并实现了弹头杀伤。这次试验是霍克导弹防御系统用于反战术弹道导弹的首次全系统试验,包括试验新型霍克导弹、AN/TPS-59雷达、数据传输线路和软件等。这次成功的试验使具有反战术弹道导弹性能的改型霍克导弹系统在1995年顺利部署。
1999年美国还推出了具有创新意义的霍克-先进中程空空导弹防空系统。该系统采用了经过数字化改进的通用发射架,并创新地将两种防空导弹有机地结合在一个防空整体中,同时配有紧凑、灵活、机动的作战管理/指挥、通信、控制和情报系统、数字式AN/MPQ-64目标跟踪雷达与AN/MPQ-61大功率目标照射雷达设备。这两种雷达能够跟踪低空和隐身目标,抗干扰与抗反辐射导弹能力强,可高速机动部署,能够通过无线或有线手段分发数字式目标数据。雷达与发射架的分布式远距部署结构和遥控发射设计,可使系统射程提高20千米以上,并使系统具有了对付战术弹道导弹、巡航导弹、反辐射导弹、隐身飞机、无人机等目标的能力。该系统还可与远程和超近程地空导弹系统、友邻地面防空火力单元联合实施防空作战,如利用作用距离更远的爱国者PAC-2/PAC-3系统多功能雷达提供的目标预警信息、为复仇者/尾刺超近程地空导弹系统提供目标预警信息等。霍克-先进中程空空导弹防空系统是霍克地空导弹系统目前的最新开发成果,估计台湾购买霍克也不会不考虑性能更加先进的这一创新系统。
目前,新型战术弹道导弹均具有比飞毛腿、SS-21、长矛等强得多的攻击与突防能力,反导型霍克地空导弹若要弥补爱国者地空导弹漏防的新型战术弹道导弹,恐难有作为。
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