Mirror scanners for panoramic millimetre wave radars

Graham Brooker; Duncan A. Robertson

doi:10.1109/radar54928.2023.10371026

Mirror scanners for panoramic millimetre wave radars

Graham Brooker, Duncan A. Robertson

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

To ensure that a vehicle mounted panoramic radar continues to illuminate the ground even in the case of base motion (roll and pitch) it is necessary to broaden the elevation beamwidth to generate a fan beam and maintain a reasonable swath width. This paper examines methods to achieve this for a 94 GHz swash plate scanner. Because of their rotational symmetry, swash plate scanners with flat mirrors produce pencil beams so some mechanism to widen the beam in elevation is required. This paper examines various methods to achieve this and concludes that shaping the mirror is the best option. A simple PCAAD-6 model was developed to predict this elevation beam spread based on the mirror curvature. Measurements were then made using both smoothly curved and stepped zone- plate mirrors that confirm the good accuracy of the predictions.

Original language	English
Title of host publication	2023 IEEE International Radar Conference (RADAR 2023)
Editors	Luke Rosenberg, Joe Fabrizio
Place of Publication	Piscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers Inc.
Number of pages	6
ISBN (Electronic)	9781665482783
ISBN (Print)	9781665482790
DOIs	https://doi.org/10.1109/radar54928.2023.10371026
Publication status	Published - 28 Dec 2023
Event	2023 IEEE International Radar Conference - ICC Sydney, Sydney, Australia Duration: 6 Nov 2023 → 10 Nov 2023 https://www.radar2023.org/

Conference

Conference	2023 IEEE International Radar Conference
Country/Territory	Australia
City	Sydney
Period	6/11/23 → 10/11/23
Internet address	https://www.radar2023.org/

Keywords

Millimeter wave radar
Swash plate mirror
Scanner
Mirror shaping
Zone plate mirror
Base motion

Access to Document

10.1109/radar54928.2023.10371026

Cite this

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title = "Mirror scanners for panoramic millimetre wave radars",

abstract = "To ensure that a vehicle mounted panoramic radar continues to illuminate the ground even in the case of base motion (roll and pitch) it is necessary to broaden the elevation beamwidth to generate a fan beam and maintain a reasonable swath width. This paper examines methods to achieve this for a 94 GHz swash plate scanner. Because of their rotational symmetry, swash plate scanners with flat mirrors produce pencil beams so some mechanism to widen the beam in elevation is required. This paper examines various methods to achieve this and concludes that shaping the mirror is the best option. A simple PCAAD-6 model was developed to predict this elevation beam spread based on the mirror curvature. Measurements were then made using both smoothly curved and stepped zone- plate mirrors that confirm the good accuracy of the predictions.",

keywords = "Millimeter wave radar, Swash plate mirror, Scanner, Mirror shaping, Zone plate mirror, Base motion",

author = "Graham Brooker and Robertson, {Duncan A.}",

year = "2023",

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

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note = "2023 IEEE International Radar Conference ; Conference date: 06-11-2023 Through 10-11-2023",

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TY - CHAP

T1 - Mirror scanners for panoramic millimetre wave radars

AU - Brooker, Graham

AU - Robertson, Duncan A.

PY - 2023/12/28

Y1 - 2023/12/28

N2 - To ensure that a vehicle mounted panoramic radar continues to illuminate the ground even in the case of base motion (roll and pitch) it is necessary to broaden the elevation beamwidth to generate a fan beam and maintain a reasonable swath width. This paper examines methods to achieve this for a 94 GHz swash plate scanner. Because of their rotational symmetry, swash plate scanners with flat mirrors produce pencil beams so some mechanism to widen the beam in elevation is required. This paper examines various methods to achieve this and concludes that shaping the mirror is the best option. A simple PCAAD-6 model was developed to predict this elevation beam spread based on the mirror curvature. Measurements were then made using both smoothly curved and stepped zone- plate mirrors that confirm the good accuracy of the predictions.

AB - To ensure that a vehicle mounted panoramic radar continues to illuminate the ground even in the case of base motion (roll and pitch) it is necessary to broaden the elevation beamwidth to generate a fan beam and maintain a reasonable swath width. This paper examines methods to achieve this for a 94 GHz swash plate scanner. Because of their rotational symmetry, swash plate scanners with flat mirrors produce pencil beams so some mechanism to widen the beam in elevation is required. This paper examines various methods to achieve this and concludes that shaping the mirror is the best option. A simple PCAAD-6 model was developed to predict this elevation beam spread based on the mirror curvature. Measurements were then made using both smoothly curved and stepped zone- plate mirrors that confirm the good accuracy of the predictions.

KW - Millimeter wave radar

KW - Swash plate mirror

KW - Scanner

KW - Mirror shaping

KW - Zone plate mirror

KW - Base motion

UR - https://doi.org/10.1109/RADAR54928.2023

U2 - 10.1109/radar54928.2023.10371026

DO - 10.1109/radar54928.2023.10371026

M3 - Chapter

SN - 9781665482790

BT - 2023 IEEE International Radar Conference (RADAR 2023)

A2 - Rosenberg, Luke

A2 - Fabrizio, Joe

PB - Institute of Electrical and Electronics Engineers Inc.

CY - Piscataway, NJ

T2 - 2023 IEEE International Radar Conference

Y2 - 6 November 2023 through 10 November 2023

ER -

Mirror scanners for panoramic millimetre wave radars

Abstract

Conference

Keywords

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