213装备联调

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    213装备联调(第1/2页)
    应雷目睹高阳归来,立即汇报:“经过近一个月的全方位努力,雷达四大系统终于迎来首次联调。”
    各子系统均已通过测试,运行稳定。变频机组已于昨日运抵魔都十四厂。在清理电机厂堆积如山的垃圾后,陈新华积极配合,提前安排了配套变频机组的生产。
    鉴于昨日是平安夜,特预祝本次雷达联调平安顺利,并特意选择平安夜当天将部件送至魔都无线电十四厂联调车间。
    该联调车间位于海边一空旷小楼,远离工厂总部,以避免电磁辐射对人体造成危害。
    经过紧张的连接,雷达全系统顺利开机。启动变频机组后,380V电压实测为380.0V,频率实测为800赫兹;220V电压实测为220.0V,频率实测为50赫兹。
    接通收发机柜,机柜电源指示灯亮起。外接电压表1显示380V正常,电流表显示1.8安培正常;外接电压表2显示220V正常,电流表显示0.6安培正常。
    接通显示机柜,机柜电源指示灯同样亮起。外接电压表1和2的读数与前述一致。
    在收发机柜面板上启动预热,高阳首次按下预热按钮,预热灯亮黄色,计时器随即启动。预热灯转为绿色,表明雷达预热完成,随时可加高压。
    此时,显示机柜的设备准备好灯亮起。高阳指示汤园调整显示屏的亮度和对比度。
    显示屏上出现“雷达开机注意事项:请在雷达开机时确认天线周边无人,请无关人员撤离高频室。”高频室是存放收发机柜的屏蔽室,房间由金属钢板全方位构建,门的橡胶密封圈为专用定制,由钢丝网与橡胶浇注而成,兼具水密和导电功能,有效屏蔽电磁辐射。
    (本章未完,请点击下一页继续阅读)213装备联调(第2/2页)
    根据国际辐射防护协会国际劳工组织规定,电磁场安全强度电磁辐射强度为0.2-0.4微特拉(24小时接触限值),低于此强度对人体无害。
    依照电磁辐射检测要求,收发机柜的电磁辐射量不得超过0.2微特拉。
    为验证是否符合标准,范开雷、应雷和高阳身着笨重的电磁防护服进入高频室,在不同距离放置检测仪器。按下高压按钮后,高压指示红灯亮起,外接电压表1显示380V正常,电流表显示3.6安培;外接电压表2显示220V正常,电流表显示1.2安培,表明收发机柜运行正常。
    显示屏上显现雷达回波,海岛、海岸轮廓清晰,海上船只回波分明。
    汤园负责目标录取,操作摸球进行单个目标跟踪,设置警戒区,目标自动或半自动录取,屏右侧持续显示跟踪目标的位置信息和运动要素。
    此时,高频室内电磁辐射检测仪显示辐射量达4微特拉,为安全限值的二十倍。
    由于高频室通常无人逗留,仅调试和修理时有人进入,且进入人员须按规定穿戴电磁防护服,故雷达验收指标中未包含此参数。
    高阳坚持己见:“尽管高频辐射未设指标,但无关辐射增加能效的同时,也提升了装备噪声,这是现代雷达的关键指标。”
    为此,高阳提出改进建议:“应对磁控管、高频收发转换开关及高频部件进行屏蔽处理,并在整个收发机柜的抽屉安装带钢丝网的橡胶垫。”
    这些建议得到范开雷的积极回应,认为高阳的意见合理且改进成本可控。
    鉴于首次联调试验,三人离开高频室后,又在室外安装测量仪器,辐射值仅为0.01微特拉。
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