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首页> 外文会议>2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing >Detection and mitigation of interference in the calibration of high gain antennas for GNSS
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Detection and mitigation of interference in the calibration of high gain antennas for GNSS

机译：GNSS高增益天线校准中的干扰的检测和缓解

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摘要

In the field of Global Navigation Satellite System (GNSS) a robust and dependable navigation is one of the most challenging task for modern space missions. To accomplish this purpose, DLR uses the high gain ground antenna, a 30 meter dish located in Weilheim. The calibration of the big antenna is performed using the radio sources emission, such as Cassiopea-A, Taurus-A, or Cygnus-A This method has been used by radio astronomers for years, but it shows some impairments when the link is obstructed by the presence of interference. Therefore, the estimation of the final gain of the antenna may be affected by some errors. The aim of this paper is to present a post processing algorithm, which detects the corrupted frequencies, and later on mitigates the effect of the interference. The gain estimation is compared before and after the application of the algorithm, showing some improvements in correspondence of the interference occurrence.
机译：在全球导航卫星系统（GNSS）领域，强大而可靠的导航是现代太空飞行任务中最具挑战性的任务之一。为了达到这个目的，DLR使用了高增益接地天线，这是位于Weilheim的一个30米长的天线。大天线的校准使用诸如卡西欧豌豆-A，金牛座-A或天鹅座-A之类的放射源进行。这种方法已经被射电天文学家使用了多年，但是当链路受到干扰时会显示出一些损伤。存在干扰。因此，天线最终增益的估计可能会受到一些误差的影响。本文的目的是提出一种后处理算法，该算法可以检测损坏的频率，并在以后减轻干扰的影响。在应用该算法之前和之后，对增益估计进行了比较，显示出在干扰发生的对应性方面有一些改进。

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