Cross-Coupling Mitigation in Polarimetric PAR via Antenna Tilt

Ivić, Igor R.

doi:10.1175/JTECH-D-22-0059.1

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Cross-Coupling Mitigation in Polarimetric PAR via Antenna Tilt

2023
By Ivić, Igor R.
Source: Journal of Atmospheric and Oceanic Technology, 40(5), 587-604

[PDF-3.26 MB]

Details You May Also Like

Details:

Journal Title:

Journal of Atmospheric and Oceanic Technology
Personal Author:

Ivić, Igor R.
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIWRO (Cooperative Institute for Severe and High-Impact Weather Research and Operations) ; NSSL (National Severe Storms Laboratory)

OAR (Oceanic and Atmospheric Research) ; CIWRO (Cooperative Institute for Severe and High-Impact Weather Research and Operations) ; NSSL (National Severe Storms Laboratory) Less -
Description:

The existence of significant cross-polar antenna patterns, as well as the scan-dependent measurement biases, inherent to the polarimetric phased array radar (PPAR), are among the most important risk factors for using this technology in weather observations. The cross-polar patterns on receive induce cross coupling between returns from the two orthogonal fields causing biases in polarimetric variable estimates. Furthermore, the electromagnetic coupling in hardware may exacerbate the cross-coupling effects. To address this problem, a pulse-to-pulse phase coding in either the horizontal or vertical ports of the transmission elements has been proposed. However, it does not affect the scan-dependent system biases in PPAR estimates, which require corrections via calibration mechanisms. Further, the cross-coupling signals are proportional to the cross-polar pattern power levels, rendering mitigation effective only at steering angles where these levels are sufficiently low (e.g., approximately less than −25 dB). In that regard, any approach that augments the number of such steering angles benefits the cross-coupling mitigation effectiveness. Herein, a simple approach that has a potential to achieve this via antenna tilt is presented.
Keywords:

[+]

Atmospheric Science Ocean Engineering
Source:

Journal of Atmospheric and Oceanic Technology, 40(5), 587-604
DOI:

https://doi.org/10.1175/JTECH-D-22-0059.1
ISSN:

0739-0572;1520-0426;
Format:

PDF
Publisher:

American Meteorological Society
Document Type:

Journal Article
Funding:

Grant no. NA21OAR4320204
Rights Information:

Other
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:be2389dbb3c816ed77272d2e036f1c74ff507dd14b9c36967c426ff73279e7be
Download URL:

https://repository.library.noaa.gov/view/noaa/50514/noaa_50514_DS1.pdf
File Type:

No Additional Files

More +

Cross-Coupling Mitigation in Polarimetric PAR via Antenna Tilt

Details:

Supporting Files

You May Also Like