Next Article in Journal
Previous Article in Journal
Sensors 2014, 14(5), 7820-7830; doi:10.3390/s140507820
Article

A Multipoint Correction Method for Environmental Temperature Changes in Airborne Double-Antenna Microwave Radiometers

1,2,* , 2
 and 2
Received: 5 March 2014; in revised form: 22 April 2014 / Accepted: 23 April 2014 / Published: 29 April 2014
(This article belongs to the Section Remote Sensors)
View Full-Text   |   Download PDF [1523 KB, uploaded 21 June 2014]
Abstract: This manuscript describes a new type Ka-band airborne double-antenna microwave radiometer (ADAMR) designed for detecting atmospheric supercooled water content (SCWC). The source of the measurement error is investigated by analyzing the model of the system gain factor and the principle of the auto-gain compensative technique utilized in the radiometer. Then, a multipoint temperature correction method based on the two-point calibration method for this radiometer is proposed. The multipoint temperature correction method can eliminate the effect of changes in environmental temperature by establishing the relationship between the measurement error and the physical temperatures of the temperature-sensitive units. In order to demonstrate the feasibility of the correction method, the long-term outdoor temperature experiment is carried out. The multipoint temperature correction equations are obtained by using the least square regression method. The comparison results show that the measuring accuracy of the radiometer can be increased more effectively by using the multipoint temperature correction method.
Keywords: microwave radiometer; temperature correction method; auto-gain compensation; airborne; double-antenna microwave radiometer; temperature correction method; auto-gain compensation; airborne; double-antenna
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Sun, J.; Zhao, K.; Jiang, T. A Multipoint Correction Method for Environmental Temperature Changes in Airborne Double-Antenna Microwave Radiometers. Sensors 2014, 14, 7820-7830.

AMA Style

Sun J, Zhao K, Jiang T. A Multipoint Correction Method for Environmental Temperature Changes in Airborne Double-Antenna Microwave Radiometers. Sensors. 2014; 14(5):7820-7830.

Chicago/Turabian Style

Sun, Jian; Zhao, Kai; Jiang, Tao. 2014. "A Multipoint Correction Method for Environmental Temperature Changes in Airborne Double-Antenna Microwave Radiometers." Sensors 14, no. 5: 7820-7830.



Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert