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首页> 外文学位 >Design, fabrication, and testing of a data acquisition and control system for an internally-calibrated wide-band microwave airborne radiometer.
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Design, fabrication, and testing of a data acquisition and control system for an internally-calibrated wide-band microwave airborne radiometer.

机译：用于内部校准的宽带微波机载辐射计的数据采集和控制系统的设计，制造和测试。

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摘要

The National Aeronautics and Space Administration (NASA)'s Earth Science Technology Office (ESTO) administers the Instrument Incubator Program (IIP), providing periodic opportunities to develop laboratory, ground-based and airborne instruments to reduce the risk, cost and schedule of future Earth Science missions. The IIP-10 project proposed in 2010 and led by PI S. Reising at Colorado State University focuses on the development of an internally-calibrated, wide-band airborne radiometer to reduce risks associated with wet-path delay correction for the Surface Water and Ocean Topography (SWOT) mission. This airborne radiometer includes microwave channels at 18.7, 23.8, and 34.0 GHz at both H and V polarizations; millimeter-wave window channels at 90.0, 130.0, 168.0 GHz; and temperature and water vapor sounding channels near 118 and 183 GHz, respectively. These microwave, millimeter-wave window and millimeter-wave sounding channels consist of 6, 3 and 16 channels, respectively, for a total of 25 channels in this airborne instrument. Since the instrument is a prototype for space flight, a great deal of effort has been devoted to minimizing the mass, size and power consumption of the radiometer's front-end.;Similar goals of minimizing the mass, size and power consumption have driven the design of the radiometer back-end, which performs the data acquisition and control functions for the entire instrument. The signals output from all 25 radiometer channels are conditioned, integrated and digitized on the analog back-end boards. The radiometer system is controlled by a Field Programmable Gate Array (FPGA) and a buffer board. Each analog back-end board conditions and simultaneously samples four signals, performing analog-to-digital conversion. The digital back-end consists of the buffer board and FPGA, which control and accept data from all seven analog back-end boards required to sample all 25 radiometer channels. The digital back-end also controls the radiometer front-end calibration (also called "Dicke") switching and the motor used to perform cross-track scanning and black body target calibration of the airborne radiometer instrument.;The design, fabrication, and test results of the data acquisition and control system are discussed in depth. First, a system analysis determines general requirements for the airborne radiometer back-end. In the context of these requirements, the design and function of each component are described, as well as its relationship to the other components in the radiometer back-end. The hardware and software developed as part of this radiometer back-end are described. Finally, the back-end testing and results of these tests are discussed.
机译：美国国家航空航天局（NASA）的地球科学技术办公室（ESTO）管理仪器孵化器计划（IIP），为开发实验室，地面和机载仪器提供定期机会，以降低未来的风险，成本和时间表地球科学任务。由科罗拉多州立大学的PI S. Reising领导的IIP-10项目于2010年提出，其重点是开发内部校准的宽带机载辐射计，以减少与地表水和海洋的湿径延迟校正有关的风险地形（SWOT）任务。这种机载辐射计包括H和V极化的18.7、23.8和34.0 GHz微波通道。 90.0、130.0、168.0 GHz的毫米波窗口信道；和分别接近118 GHz和183 GHz的温度和水蒸气探测通道。这些微波，毫米波窗口和毫米波探测通道分别由6、3和16个通道组成，在此机载仪器中总共有25个通道。由于该仪器是用于太空飞行的原型机，因此付出了巨大的努力来最小化辐射计前端的质量，尺寸和功耗。最小化质量，尺寸和功耗的类似目标推动了设计辐射计后端，它执行整个仪器的数据采集和控制功能。从所有25个辐射计通道输出的信号在模拟后端板上进行调节，积分和数字化。辐射计系统由现场可编程门阵列（FPGA）和缓冲板控制。每个模拟后端板都会调节并同时采样四个信号，以执行模数转换。数字后端由缓冲板和FPGA组成，它们控制和接收来自对全部25个辐射计通道进行采样所需的所有七个模拟后端板的数据。数字后端还控制辐射计前端校准（也称为“ Dicke”）切换，以及用于执行机载辐射计仪器的跨轨扫描和黑体目标校准的电机。设计，制造和测试深入讨论了数据采集与控制系统的结果。首先，系统分析确定了机载辐射计后端的一般要求。在这些要求的上下文中，描述了每个组件的设计和功能，以及它与辐射计后端中其他组件的关系。描述了作为此辐射计后端的一部分开发的硬件和软件。最后，讨论了后端测试和这些测试的结果。

著录项

  • 作者

    Nelson, Scott P.;

  • 作者单位

    Colorado State University.;

  • 授予单位 Colorado State University.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2014
  • 页码 155 p.
  • 总页数 155
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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