NDLI: An airborne radar system for high-resolution mapping of internal layers

Content Provider	IEEE Xplore Digital Library
Author	Kanagaratnam, P. Eakin, R. Gogineni, S.P.
Copyright Year	2001
Description	Author affiliation: Radar Syst. & Remote Sensing Lab., Kansas Univ., Lawrence, KS, USA (Kanagaratnam, P.)
Abstract	Accumulation rate is a key variable in assessing the mass balance of polar ice sheets. An improved knowledge of the mass balance of polar ice sheets is needed to determine their role in current and future sea level rise. Existing accumulation maps, derived from sparsely distributed ice cores and pits, contain accumulation rate errors as large as 20% in certain areas. Remote sensing methods to complement and supplement in situ measurements are required to generate improved accumulation maps. For this reason we have been investigating the use of high-resolution radars for mapping of near-surface internal layers and generating continuous profiles of the dated layers in the ice sheet (isochrones). We successfully mapped isochrones within 2 m of those in an ice core up to a depth of 280 m at the North GReenland Ice core Project (NGRIP) ice camp during the 1998 and 1999 field seasons using a 170-2,000 MHz frequency modulated continuous wave (FM-CW) radar. We described the system and reported results of our experiments in previous IGARSS meetings [Kanagaratnam et al. 1999, 2000]. Recently we performed detailed analysis of the data collected from these experiments and determined the frequency response of reflections from the internal layers. The results showed the optimum frequency range for monitoring near-surface layers is between 500 and 1000 MHz. Based on these results we are developing a 600-900 MHz coherent airborne radar for high-resolution mapping of the internal layers in the Greenland ice sheet. We designed this system to operate in different modes: simple pulse, chirped pulse, step-frequency, and FM-CW. We have also developed a digital data acquisition system to collect and process data. We designed this system such that it can operate in an undersampling mode to digitize the received signal directly without down conversion. In this paper we present results of data analysis and detailed design of the airborne radar.
Starting Page	940
Ending Page	942
File Size	61473
Page Count	3
File Format	PDF
ISBN	0780370317
DOI	10.1109/IGARSS.2001.976687
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-07-09
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Airborne radar Ice Data analysis Sea level Remote sensing Sea measurements Radar remote sensing Frequency modulation Performance analysis Frequency response
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

High-resolution mapping of near-surface internal snow layers with a wideband radar

A High-Resolution Airborne Radar System for Near Surface Mapping of Internal Layers to Estimate Accumulation Rate

High-resolution monitoring of internal layers over the Greenland ice sheet

A wideband radar for mapping internal layers in the polar icesheets for estimating accumulation rate

A wideband radar for high-resolution mapping of near-surface internal layers in glacial ice

An Airborne Radar System for High-Resolution Mapping of Internal Layers (2001)

Using of airborne side-looking radar images for nonlinear internal wave studies

Airborne radar depth sounding of fast flowing glaciers

Remote sensing of land and water with an airborne 94-GHZ synthetic aperture radar

An airborne radar system for high-resolution mapping of internal layers

Similar Documents

High-resolution mapping of near-surface internal snow layers with a wideband radar

A High-Resolution Airborne Radar System for Near Surface Mapping of Internal Layers to Estimate Accumulation Rate

High-resolution monitoring of internal layers over the Greenland ice sheet

A wideband radar for mapping internal layers in the polar icesheets for estimating accumulation rate

A wideband radar for high-resolution mapping of near-surface internal layers in glacial ice

An Airborne Radar System for High-Resolution Mapping of Internal Layers (2001)

Using of airborne side-looking radar images for nonlinear internal wave studies

Airborne radar depth sounding of fast flowing glaciers

Remote sensing of land and water with an airborne 94-GHZ synthetic aperture radar

An airborne radar system for high-resolution mapping of internal layers