Is Incoherent Scatter Feasible Using the UTR-2 Antenna and the SURA Transmitter?

9319919 Kelley这项探索性研究小额赠款（SGER）的目的是计划和实施一个关键组成部分，通过使用位于乌克兰哈尔科夫附近的巨大射电望远镜，在20-25 MHz频率范围内进行首次非相干散射观测。 这项工作与塔尔萨大学和下诺夫哥罗德的放射物理研究所（NIRFI）的联合提案密切相关。 根据后一项建议，将在俄罗斯的瓦西尔苏尔斯克建造一个天线场。 在完成三分之一的投影天线场后，将进行联合实验，以测试这里描述的双基地模式下可以进行非相干散射的概念。 该项目的结果对于评估整个系统的性能至关重要，该系统将具有三倍的功率和三倍的天线尺寸。 反过来，这些数据将使美国国家科学基金会能够衡量在可能的国际设施中采取下一步措施的重要性，以探测具有非相干散射的内磁层和具有相干散射的极光源。 该提案适合SGER赠款，因为它显然是探索性和高风险的。 从来没有在这个频率上进行过非相干散射雷达测量，也没有一种方法可以通过雷达方法确定等离子体的外边界的位置。 这项实验将使人们能够清楚地评估地面系统跟踪这一重要边界的能力。 此外，乌克兰科学家目前面临的非常困难的情况使得这种合作努力在最近的将来非常重要。 除其他外，需要立即支助大型UTR-2天线阵（射电望远镜），该天线阵对世界无线电科学界具有独特的价值，对这里所述的项目至关重要。 ***

9319919 Kelley The purpose of this Small Grant for Exploratory research (SGER) is to plan and carry out a key component to the first incoherent scatter observations in the frequency range 20-25 MHz by using a huge Radio Telescope located near Kharkov, Ukraine. The work is closely coupled to the joint proposal from Tulsa University and te Radiophysical Research institute (NIRFI) in Nizhny Novgorod. Under the latter proposal an antenna field will be constructed at Vasil"sursk in Russia. Upon completion of one-third of the projected antenna field, a joint experiment will be carried outto test the notion that incoherent scatter can be carried out in the bi-static mode described here. The results of the project will be crucial in assessing the performance of the full system which will have three times the power and three times the antenna size. In turn these data will allow the NSF to gauge the importance of taking the next steps in a possible International facility for probing the inner magnetosphere with incoherent scatter and the source of the aurora with coherent scatter. The proposal is appropriate for a SGER grant since it is clearly exploratory and high risk. There has never been an incoherent scatter radar measurement at this frequency nor has there been a way to determine the location of the outer boundary of the plasmasphere by radar methods. This experiment will allow a clear assessment of the ability of a ground based system to track this important boundary. In addition the very difficult present situation for scientists in the Ukraine makes such a cooperative effort very important in the nearest future. Among other things, immediate support is needed for the large UTR-2 antenna array (radio telescope) whose value for the world radio-scientific community is unique and which is critically important for the project described here. ***