High-resolution low-sidelobe laser ranging based on incoherent pulse compression

Daniel Kravitz; Daniel Grodensky; Nadav Levanon; Avi Zadok

doi:10.1109/lpt.2012.2222367

High-resolution low-sidelobe laser ranging based on incoherent pulse compression

Daniel Kravitz, Daniel Grodensky, Nadav Levanon, Avi Zadok

Bar-Ilan University - The Alexander Kofkin Faculty of Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

A technique for high-resolution laser detection and ranging with strong sidelobe suppression is experimentally demonstrated. This method relies on the transmission of a long unipolar sequence of intensity-modulated pulses, the incoherent direct detection of reflected echoes, and subsequent processing by proper digital filters at the receiver end. The obtained sidelobe suppression nearly replicates that of the bipolar sequences, even though the transmitted sequence is unipolar. Both the transmitted sequence and the receiver-end filter are derived from a bipolar code through a pulse position modulation algorithm. Mismatched filters are used for further sidelobe suppression. Due to the processing gain, ranging measurements are successfully performed at signal-to-noise ratios as low as -20 dB.A range change of 2.5 cm is accurately resolved. The proposed method provides the sidelobe suppression of a complex coherent receiver while using simple incoherent detection.

Original language	English
Article number	6320614
Pages (from-to)	2119-2121
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	24
Issue number	23
DOIs	https://doi.org/10.1109/lpt.2012.2222367
State	Published - 2012

Bibliographical note

Funding Information:
Manuscript received June 28, 2012; revised September 10, 2012; accepted September 28, 2012. Date of publication October 3, 2012; date of current version November 20, 2012. This work was supported in part by the German-Israeli Foundation under Grant I-2219-1978.10/2009.

Funding

Manuscript received June 28, 2012; revised September 10, 2012; accepted September 28, 2012. Date of publication October 3, 2012; date of current version November 20, 2012. This work was supported in part by the German-Israeli Foundation under Grant I-2219-1978.10/2009.

Funders	Funder number
German-Israeli Foundation for Scientific Research and Development	I-2219-1978.10/2009

Keywords

Laser detection and ranging (LADAR)
matched filtering
optical signal processing
pulse compression
ranging measurements

Access to Document

10.1109/lpt.2012.2222367

Cite this

@article{a091a95b1e5d4a69874ad42447e4071c,

title = "High-resolution low-sidelobe laser ranging based on incoherent pulse compression",

abstract = "A technique for high-resolution laser detection and ranging with strong sidelobe suppression is experimentally demonstrated. This method relies on the transmission of a long unipolar sequence of intensity-modulated pulses, the incoherent direct detection of reflected echoes, and subsequent processing by proper digital filters at the receiver end. The obtained sidelobe suppression nearly replicates that of the bipolar sequences, even though the transmitted sequence is unipolar. Both the transmitted sequence and the receiver-end filter are derived from a bipolar code through a pulse position modulation algorithm. Mismatched filters are used for further sidelobe suppression. Due to the processing gain, ranging measurements are successfully performed at signal-to-noise ratios as low as -20 dB.A range change of 2.5 cm is accurately resolved. The proposed method provides the sidelobe suppression of a complex coherent receiver while using simple incoherent detection.",

keywords = "Laser detection and ranging (LADAR), matched filtering, optical signal processing, pulse compression, ranging measurements",

author = "Daniel Kravitz and Daniel Grodensky and Nadav Levanon and Avi Zadok",

note = "Funding Information: Manuscript received June 28, 2012; revised September 10, 2012; accepted September 28, 2012. Date of publication October 3, 2012; date of current version November 20, 2012. This work was supported in part by the German-Israeli Foundation under Grant I-2219-1978.10/2009.",

year = "2012",

doi = "10.1109/lpt.2012.2222367",

language = "אנגלית",

volume = "24",

pages = "2119--2121",

journal = "IEEE Photonics Technology Letters",

issn = "1041-1135",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "23",

}

TY - JOUR

T1 - High-resolution low-sidelobe laser ranging based on incoherent pulse compression

AU - Kravitz, Daniel

AU - Grodensky, Daniel

AU - Levanon, Nadav

AU - Zadok, Avi

N1 - Funding Information: Manuscript received June 28, 2012; revised September 10, 2012; accepted September 28, 2012. Date of publication October 3, 2012; date of current version November 20, 2012. This work was supported in part by the German-Israeli Foundation under Grant I-2219-1978.10/2009.

PY - 2012

Y1 - 2012

N2 - A technique for high-resolution laser detection and ranging with strong sidelobe suppression is experimentally demonstrated. This method relies on the transmission of a long unipolar sequence of intensity-modulated pulses, the incoherent direct detection of reflected echoes, and subsequent processing by proper digital filters at the receiver end. The obtained sidelobe suppression nearly replicates that of the bipolar sequences, even though the transmitted sequence is unipolar. Both the transmitted sequence and the receiver-end filter are derived from a bipolar code through a pulse position modulation algorithm. Mismatched filters are used for further sidelobe suppression. Due to the processing gain, ranging measurements are successfully performed at signal-to-noise ratios as low as -20 dB.A range change of 2.5 cm is accurately resolved. The proposed method provides the sidelobe suppression of a complex coherent receiver while using simple incoherent detection.

AB - A technique for high-resolution laser detection and ranging with strong sidelobe suppression is experimentally demonstrated. This method relies on the transmission of a long unipolar sequence of intensity-modulated pulses, the incoherent direct detection of reflected echoes, and subsequent processing by proper digital filters at the receiver end. The obtained sidelobe suppression nearly replicates that of the bipolar sequences, even though the transmitted sequence is unipolar. Both the transmitted sequence and the receiver-end filter are derived from a bipolar code through a pulse position modulation algorithm. Mismatched filters are used for further sidelobe suppression. Due to the processing gain, ranging measurements are successfully performed at signal-to-noise ratios as low as -20 dB.A range change of 2.5 cm is accurately resolved. The proposed method provides the sidelobe suppression of a complex coherent receiver while using simple incoherent detection.

KW - Laser detection and ranging (LADAR)

KW - matched filtering

KW - optical signal processing

KW - pulse compression

KW - ranging measurements

UR - http://www.scopus.com/inward/record.url?scp=84870400059&partnerID=8YFLogxK

U2 - 10.1109/lpt.2012.2222367

DO - 10.1109/lpt.2012.2222367

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84870400059

SN - 1041-1135

VL - 24

SP - 2119

EP - 2121

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 23

M1 - 6320614

ER -

High-resolution low-sidelobe laser ranging based on incoherent pulse compression

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this