• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace and Electronic Systems, IEEE Transactions on >City Noise and Its Effect Upon Airborne Antenna Noise Temperatures at UHF
【24h】

City Noise and Its Effect Upon Airborne Antenna Noise Temperatures at UHF

机译：超高频下的城市噪声及其对机载天线噪声温度的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Results of an experimental program to determine the characteristics of city noise and its effect on airborne UHF antennas are presented. Coherent sources of energy from communications equipment, radar, navigational aids, etc. are not included in the analysis. Based upon the experimental data, a model of the industrial noise is presented in which an industrial area is considered as a uniformly distributed source of independent radiators. The magnitude of the power density distribution was computed to be 3×10-18 to 1×10-18 W/m2/Hz over the UHF band for all the East Coast cities measured, with the exception of New York City which was 5 to 6 dB higher. Relations have been derived and curves plotted to compute antenna noise temperature increase due to city noise, based upon the metropolitan area and its range from the aircraft.
机译：介绍了确定城市噪声特征及其对机载UHF天线的影响的实验程序的结果。分析中不包括来自通信设备，雷达，导航设备等的相干能源。根据实验数据，提出了一种工业噪声模型，其中将工业区域视为独立散热器的均匀分布源。计算得出的所有东海岸城市的UHF频带上的功率密度分布的大小为3×10-18至1×10-18 W / m2 / Hz ，但纽约市高出5到6 dB。根据大城市区域及其距飞机的距离，推导了关系并绘制了曲线，以计算由于城市噪声引起的天线噪声温度升高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号