Determining Irrigation Wetting Patterns Using Time Domain Reflectometry
نویسندگان
چکیده
منابع مشابه
Time Domain Reflectometry ( TDR )
This chapter represents the state of the art at the time of release. Readers are encouraged to consult the link below for the version of this chapter with the most recent release date:
متن کاملUsing neural networks for calibration of time- domain reflectometry measurements
Time-domain reflectometry (TDR) is an electromagnetic technique for measurements of water and solute transport in soils. The relationship between the TDR-measured dielectric constant (Ka) and bulk soil electrical conductivity (cra) to water content (8W) and solute concentration is difficult to describe physically due to the complex dielectric response of wet soil. This has led to the developmen...
متن کاملOptimal detection bandwidth for phase-sensitive optical time-domain reflectometry
The spectrum of the temporal traces obtained from a phase-sensitive optical time-domain reflectometer is theoretically and experimentally analysed, demonstrating its dependence on the incident optical pulse shape. Numerical simulations and theoretical results are validated experimentally, showing a good matching for rectangular optical pulses. The influence of the photodetector bandwidth on the...
متن کاملCable Length Measurement Systems Based on Time Domain Reflectometry
Based on the principle of time domain reflectometry(TDR) cable length measurement, the principle error of the TDR cable length measurement is analyzed. Methods for reducing cable length measurement error are analyzed. Two cable length measurement systems based on the TDR principle are designed. The high-precision time interval measurement module is the core of the first measurement system. The ...
متن کاملJoint Time-Frequency Domain Reflectometry for Diagnostics of Coaxial Cables
The importance of aging electrical wiring and associated faults in aircraft has been highlighted due to the critical effects on the safety of overall systems. Traditional reflectometry methods for the detection and localization of the faults on cable have been achieved in either the time domain or frequency domain only. In this paper, we introduce a new high-performance reflectometry technique ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: HortScience
سال: 1993
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.28.4.338