NDLI: Structured de-chirp for compressive sampling of LFM waveforms

Content Provider	IEEE Xplore Digital Library
Author	Pollock, B. Goodman, N.A.
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Computer Engineering, The University of Arizona, Tucson, 85721, USA (Pollock, B.) \|\| School of Electrical and Computer Engineering, The University of Oklahoma, Norman, 73019, USA (Goodman, N.A.)
Abstract	Stretch processing is often used by radar systems to capture LFM waveforms. Although stretch processing reduces sampling rate, it does so at the expense of increased data collection period. Therefore, the time-bandwidth product of the de-chirped waveform is approximately constant, and stretch processing cannot be considered a compressive technique. The sample rate of a stretch processor must match the bandwidth of the beat frequencies created in the de-chirp process. Uniform sampling at lower rates will cause range ambiguities without an anti-aliasing filter, but an anti-aliasing filter removes part of the range swath. We propose a hopping de-chirp signal (sensing matrix) that shifts regions of the range swath in and out of the anti-aliasing filter's bandwidth. This hopping produces a unique time profile of beat frequencies for each range in the swath and enables compressive sampling without sacrificing range swath or resolution and without introducing ambiguities. After describing the hopping de-chirp technique, we analyze multichannel implementations where it is possible to use a different hopping sequence on each channel.
Starting Page	37
Ending Page	40
File Size	803670
Page Count	4
File Format	PDF
ISBN	9781467310703
ISSN	2151870X
e-ISBN	9781467310710
DOI	10.1109/SAM.2012.6250516
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Bandwidth Time frequency analysis Receivers Kernel Radar Modulation
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

A comparison of PRN and LFM waveforms and processing in terms of the impact on radar resources

Time of flight measurements for optically illuminated underwater targets using Compressive Sampling and Sparse reconstruction

Recognition of polyphase coded signals using time-frequency rate distribution

Some results of radar signal processing in time microscale

Performance analysis of parameter estimation algorithm for LFM signals using quadratic phase function

Weak signal detection using compressive receiver

Characterization of diversity approaches for LFM stretch-processed waveforms

Waveforms design for modern and MIMO radar

Frequency domain low time-bandwidth product chirp synthesis for pulse compression side lobe reduction

Structured de-chirp for compressive sampling of LFM waveforms

Similar Documents

A comparison of PRN and LFM waveforms and processing in terms of the impact on radar resources

Time of flight measurements for optically illuminated underwater targets using Compressive Sampling and Sparse reconstruction

Recognition of polyphase coded signals using time-frequency rate distribution

Some results of radar signal processing in time microscale

Performance analysis of parameter estimation algorithm for LFM signals using quadratic phase function

Weak signal detection using compressive receiver

Characterization of diversity approaches for LFM stretch-processed waveforms

Waveforms design for modern and MIMO radar

Frequency domain low time-bandwidth product chirp synthesis for pulse compression side lobe reduction

Structured de-chirp for compressive sampling of LFM waveforms