Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· References in the article
· Citations to the Article (2) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Radar interference blanking in radio astronomy using a Kalman tracker
Authors:
Dong, W.; Jeffs, B. D.; Fisher, J. R.
Affiliation:
AA(Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah, USA); AB(Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah, USA); AC(Green Bank Observatory, National Radio Astronomy Observatory, Green Bank, West Virginia, USA)
Publication:
Radio Science, Volume 40, Issue 5, CiteID RS5S04 (RaSc. Homepage)
Publication Date:
06/2005
Origin:
AGU
AGU Keywords:
Radio Science: Radio astronomy, Radio Science: Electromagnetic noise and interference, Radio Science: Instruments and techniques (1241), Radio Science: Signal processing (0674)
DOI:
10.1029/2004RS003130
Bibliographic Code:
2005RaSc...40S5S04D

Abstract

Radio astronomical observations of highly Doppler shifted spectral lines of neutral hydrogen and the hydroxyl molecule must often be made at frequencies allocated to pulsed air surveillance radar in the 1215-1350 MHz frequency range. The Green Bank telescope (GBT) and many other observatories must deal with these terrestrial signals. Even when strong radar fixed clutter echoes are removed, there are still weaker aircraft echoes present which can corrupt the data. We present an algorithm which improves aircraft echo blanking using a Kalman filter tracker to follow the path of a sequence of echoes observed on successive radar antenna sweeps. Aircraft tracks can be used to predict regions (in bearing and range) for the next expected echoes, even before they are detected. These data can then be blanked in real time without waiting for the pulse peak to arrive. Additionally, we briefly suggest an approach for a new Bayesian algorithm which combines tracker and pulse detector operations to enable more sensitive weak pulse detection. Examples are presented for Kalman tracking and radar transmission blanking using real observations at the GBT.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints