MRI: Development of a Redeployable Spread Spectrum Multiple Input Multiple Output (MIMO) Meteor Radar

MRI：可重新部署扩频多输入多输出 (MIMO) 流星雷达的开发

• 批准号: 1626041
• 负责人: Philip Erickson
• 金额: $ 29.55万
• 依托单位: Northeast Radio Observatory Corp
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1626041&HistoricalAwards=false
• 关键词: MRI; Development; Redeployable; Spread; Spectrum

This award provides funding to construct a novel meteor radar instrument called Multistatic Spread Spectrum Meteor Radar (MSMR). The MSMR design is innovative in part because the electronics would be based upon commercial components that would avoid radio wave interference problems. The primary purpose of the application of this new instrument is to study the phenomena of mesospheric dynamics, ionospheric irregularities, and meteoroid influx deposition. The primary aim of the science application using this instrument would be to achieve the measurements of the winds in the mesosphere-lower thermosphere region from 75 to 110 km. Unlike other meteor radar systems, this instrument would be easily transportable, cheap to fabricate, with relatively low power required for any radio transmission. The broader impact of this award is that it would provide an excellent platform for young engineers to gain experience in working with a design structure largely centered around the collection of immense amounts of data that is analyzed on the fly to achieve intermediate data products. Summer students would be supported on this project as well as a postdoctoral scholar that would receive part time support.The radar system will consist of three transmitter antennas and two interferometric receiver antenna fields. A continuous pseudorandom phasecode unique to each transmitter would be utilized for transmission of the radar signals. Because pseudorandom waveforms do not correlate with external radio interference, the system has good rejection of external radio interference. An unqiue property of MSMR that is unlike any existing meteor radars is all of the transmitter antennas of MSMR can be operated on the same frequency band with minimal mutual interference. The radar system can also be used at a smaller peak power than current systems, while utilizing the same average power as a pulsed system. The new innovations make radio licensing easier, as a large radar network will only occupy a portion of the radio spectrum that is equivalent to a single mono-static radar. These new MSMR features allow construction of a dense meteor radar network that can be applied to studies of mesospheric wind fields and trajectories of ablating meteoroids using a significantly larger number of specular meteor echoes than ever before. The radar can also be used to allow observations of field aligned ionospheric irregularities (FAI) without the range-Doppler ambiguity that is an issue for existing pulsed systems. The radar system relies on modern software defined radio hardware, which greatly reduces the complexity of the radar system, with most of the features implemented in software.

该奖项为构建一种新型的流星雷达仪器提供了资金，称为多阶段传播光谱雷达（MSMR）。 MSMR设计具有创新性，部分原因是电子产品将基于可以避免无线电波干扰问题的商业组件。 应用这种新仪器的主要目的是研究中层动力学，电离层不规则和灭气体涌入沉积的现象。使用该仪器的科学应用的主要目的是实现从75到110 km的中层低热球区域中风的测量。与其他流星雷达系统不同，该仪器将易于运输，便宜，可以制造，并且任何无线电传输所需的功率相对较低。该奖项的更广泛的影响是，它将为年轻工程师提供一个极好的平台，以获得与设计结构合作的经验，这些设计结构在很大程度上围绕着大量的数据集中，这些数据被即即时分析，以实现中间数据产品。夏季学生将受到该项目的支持，以及将获得兼职支持的博士后学者。雷达系统将由三个发射器天线和两个干涉仪接收器天线田进行组成。 每个发射器所独有的连续伪andom phasecode将用于雷达信号的传输。由于伪随机波形与外部无线电干扰无关，因此系统对外部无线电干扰有很好的拒绝。 MSMR的非Qiue特性与任何现有的流星雷达不同是MSMR的所有发射器天线都可以在同一频带上操作，并具有最小的相互干扰。雷达系统也可以在比电流系统较小的峰值功率下使用，同时利用与脉冲系统相同的平均功率。新的创新使无线电许可变得更加容易，因为大型雷达网络只会占据相当于单个单静电雷达的一部分无线电频谱。这些新的MSMR特征允许构建一个密集的流星雷达网络，可以使用比以往任何时候都大得多的散镜流星回声来研究中层风场和烧蚀流星的轨迹。雷达还可以用于允许观察场对齐的电离层违规度（FAI），而没有范围多普勒歧义，这是现有脉冲系统的问题。雷达系统依赖于现代软件定义的无线电硬件，这大大降低了雷达系统的复杂性，其中大多数功能在软件中实现。