On-board calibration system for millimeter-wave radiometers based on reference-polarized signal injection

被引：6

作者：

Peverini, OA ^{[1
]}

Tascone, R

Carretti, E

Virone, G

Olivieri, A

Orta, R

Cortiglioni, S

Monari, J

机构：

[1] Ist Elettron & Ingn Informaz & Telecomun, I-10129 Turin, Italy

[2] Natl Astrophys Inst Italy, I-40129 Bologna, Italy

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2006年 / 54卷 / 01期

关键词：

calibration techniques; millimeter waves; radiometers; waveguide components;

D O I：

10.1109/TMTT.2005.860496

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the architecture of a novel on-hoard calibration system for millimeter-wave radiometers aimed at measuring the Q, U Stokes parameters of the sky emission. This technique requires the injection of differently polarized reference signals, which is carried out by means of a specific component mounted in the antenna-feed system. The presented technique was developed by Cortiglioni et al. for the calibration of the Balloon-borne Radiometers for Sky Polarization Observations radiometers, specifically designed to measure the polarized sky emission by a correlation technique. A procedure for the accurate evaluation of the polarization state of the calibration signals is also reported. Numerical and experimental results are presented for the K alpha-band calibrator in the operational conditions.

引用

页码：412 / 420

页数：9

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