In-situ calibration system of phased array radar antenna based on microwave photonic technology

2017 ◽  
Vol 46 (7) ◽  
pp. 717005
Author(s):  
张业斌 Zhang Yebin ◽  
盛永鑫 Sheng Yongxin ◽  
田晓光 Tian Xiaoguang
Keyword(s):  
Phased Array ◽  
Calibration System ◽  
Microwave Photonic ◽  
Phased Array Radar ◽  
In Situ Calibration ◽  
Radar Antenna

scholarly journals Sensitivity Study of the 5-station configuration of ARA

2019 ◽  
Vol 216 ◽  
pp. 02009
Author(s):  
Simon Archambault
Keyword(s):  
Phased Array ◽  
Sensitivity Study ◽  
In Situ Calibration ◽  
The Antarctic ◽  
Antenna Model

The Askaryan Radio Array (ARA) is an experiment looking for the Askaryan emission of cosmogenic neutrinos interacting in the Antarctic ice. During the last Antarctic summer, two new stations have been added to the experiment, as well as a prototype version of a phased array, attached to one of the new stations. With these stations, ARA sensitivity should become comparable to IceCube’s from 1018 eV and above. To confirm this, the sensitivity is going to be calculated through new simulations developed in the IceCube framework, with an antenna model built from in-situ calibration measurements.

A long-term in situ calibration system for chemistry analysis of seawater

2010 ◽  
Vol 11 (9) ◽  
pp. 701-708 ◽  
Author(s):  
Chun-yang Tan ◽  
Bo Jin ◽  
Kang Ding ◽  
William E. Seyfried ◽  
Ying Chen
Keyword(s):  
Calibration System ◽  
In Situ Calibration

scholarly journals A Low Cross-Polarization Configuration Method for Phased Array Radar Antenna

Electronics ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 396 ◽  
Author(s):  
Yongzhen Li ◽  
Zhanling Wang ◽  
Chen Pang ◽  
Xuesong Wang
Keyword(s):  
Phased Array ◽  
Polarization State ◽  
Cross Polarization ◽  
Dual Polarization ◽  
Phased Array Radar ◽  
The Cross ◽  
Radar Antenna ◽  
Polarization Level ◽  
State Configuration ◽  
Key Parameter

The cross-polarization isolation (CPI) is a key parameter to assess the dual-polarization antenna because the cross-polarization closely affects the antenna application. A polarization state configuration (PSC) approach is proposed to configure the polarization state of the polarimetric phased array radar antenna. Unlike the traditional fixed polarization states such as the linear polarization (LP) and the circular polarization (CP), the PSC method modulates the polarization state of the radiated wave continuously. In addition, the optimal excitation magnitude and phase of the dual-polarization element is calculated, thereby maximizing the CPI. Most of the configured polarization state is the elliptical polarization (EP), and a lower cross-polarization level and higher CPI could be obtained. This method could expand the acceptable angle range when compared with the LP and CP waves. Numerical simulations and comparisons are conducted to manifest the validity of the proposed method.

RF Photonic, In-Situ, Real-Time Phased Array Antenna Calibration System

2010 ◽  
Author(s):  
W. M. Dorsey ◽  
Mark G. Parent ◽  
S. A. Long ◽  
Christopher S. McDermitt ◽  
Frank Bucholtz
Keyword(s):  
Real Time ◽  
Phased Array ◽  
Array Antenna ◽  
Calibration System ◽  
Phased Array Antenna ◽  
Antenna Calibration

Research and Practice on the In-Situ Calibration System for Flowrate of Pump-Test-Rig

2011 ◽  
Author(s):  
Li Cheng ◽  
Xiaohong Che ◽  
Can Luo ◽  
Bipeng Yan
Keyword(s):  
Calibration System ◽  
Test Rig ◽  
Standard Measuring ◽  
Volume Weight ◽  
Measuring Cylinder ◽  
In Situ Calibration ◽  
Pump Test ◽  
Weight Method ◽  
Volume Method

In order to assure the accuracy of pump test rig and stability of measurement, it would be equipped with flow meter of high precision and calibration system. A volume-weight method for in-situ calibration is brought out to achieve bidirectional calibration. The two way calibration can be done on the pump test rig. According to the design objective, the pump, weight tank, pool, commutator and standard measuring cylinder were calculated and selected. Based on measurement uncertainty method, the system uncertainty consisted of uncertainty of standard measuring cylinder, calculagraph, commutator and calibration sensor of volume method. The calculation formulas of these uncertainties are presented. The total expanded uncertainty of system is 0.136% and the stability of flowrate is 0.0212%. Results from calculation and pressure pulse experiment indicate that the combination of the convert-frequency facility with invariableness’ pool can maintain the pressure stability of test. The volume-weight calibration method, which combined with the weight method and volume method, can assure the accuracy and also reduce the expensive. It could be applied in similar test rigs.

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