Author(s)
Vaasu Taneja, Andrew Okoro, Clark Mattoon, and Mariya Zheleva
Abstract
Transmitters operating at a fundamental frequency emit harmonics at integer multiples of that frequency, which can interfere with incumbent systems in higher frequency bands, even when the fundamental transmission complies with regulations. This poses a serious interference challenge, especially for sensitive applications such as remote Earth sensing and radio astronomy. We investigated the potential impact of these harmonic emissions through a measurement campaign in the National Radio Quiet Zone. Using a multi-sensor setup, we simultaneously measured real-world fundamental signals and their harmonics around the radio quiet zone. We are currently analyzing this data to determine the potential impact of harmonic emissions on instruments at the Green Bank Observatory.