A Novel Target-Height Estimation Approach Using Radar-Wave Multipath Propagation for Automotive Applications

Laribi, Amir; Hahn, Markus; Dickmann, Jürgen; Waldschmidt, Christian

doi:10.5194/ars-15-61-2017

Cited by 12 publications

(5 citation statements)

References 9 publications

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“…where hs is a sensor height from the ground. For automotive application estimation of the object height by evaluation of the multipath propagated radar wave is mentioned first in [11]. The authors applied a Taylor expansion in calculations, assuming the (hs -ht << d):…”

Section: Multipath Propagation Modelmentioning

confidence: 99%

Height Estimation Methods for Object Detection in Automotive Radar Applications

Musralina¹,

Zwick²,

Harter³

2022

World Congress on Electrical Engineering and Computer Systems and Science

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In automotive parking scenario, where the curb shall be detected and classified to be traversable or not, radars play an important role. There are different approaches already proposed in other works to estimate the target height. This paper assesses and compares two methods. The first is based on Angle of Arrival (AoA) estimation of input signals of multiple antennas using the Multiple-Input-Multiple-Output (MIMO) principle. The second method uses the geometry in multipath propagation of the radar echo signal for one antenna input. In this work a modified method of calculation of the curb height based on the second method is proposed. The theory of approach is mathematically proved and effectiveness is demonstrated by evaluation of measurements with a 77 GHz Frequency Modulated Continuous Wave (FMCW) radar. In order to evaluate the performance of the introduced method the mean square error (MSE) is used in the proposed scenario. This method, using only one antenna input, produced up to 3.4 times better results for curb height detection in comparison with former methods.

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Section: Multipath Propagation Modelmentioning

confidence: 99%

Height Estimation Methods for Object Detection in Automotive Radar Applications

Musralina¹,

Zwick²,

Harter³

2022

World Congress on Electrical Engineering and Computer Systems and Science

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“…Further approaches to estimate the height of a target using a single antenna element exist, e.g. [3], [4]. In an automotive radar context, the effect was first modeled by Bühren [5].…”

Section: Introductionmentioning

confidence: 99%

Radar Classification of Vehicles Using a Ground-Reflection Model

Kohnert

Zoeke

Stollé

2022

2022 Asia-Pacific Microwave Conference (APMC)

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Classification of road users is important for traffic monitoring. The usability of a height estimate based on the tworay ground-reflection model as a feature for the classification of vehicles is analyzed in this paper. The four-ray ground-reflection model for fast chirp ramp sequence waveforms of FMCW radars is derived and simplified to the well-known two-ray groundreflection model. A spectrum from which the height of a target can be derived is obtained using the Lomb-Scargle periodogram. Measurements with two vehicle classes illustrate the approach and show that the model could be used as a feature to distinguish vehicles based on their height.

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“…The applied pattern consisted of variation in the back-scattered power from the phase differences of the direct path to the target and the indirect path, while driving towards bridges or stationary obstacles. In the previous work [4] [5], results of height measurement trials conducted on extended targets located at short ranges (less than 7 m) proved that the height of point targets can be accurately estimated by exploiting the range difference information between line-of-sight (LOS) and nonline-of-sight (NLOS) components of radar waves. In this paper, height determination of targets located at mid-and long-ranges is investigated, in particular, the height estimation of bridges and entrance gates.…”

Section: Introductionmentioning

confidence: 99%

A new height-estimation method using FMCW radar Doppler beam sharpening

Laribi

Hahn

Dickmann

et al. 2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-This paper presents a new method for estimating the height of extended objects using a Frequency Modulation Continuous Wave (FMCW) automotive radar. The proposed algorithm exploits the frequency shift caused by the Doppler effect while approaching stationary objects, to estimate target heights. Thus, the algorithm does not require multiple vertical antennas for height finding. First, the measured radial velocity is derived using sensor target geometry, then, a target height is formulated as a function of target range, vehicle velocity and elevation angle component of the measured radial velocity. Next, the processing pipeline of the proposed Doppler Beam Sharpening (DBS) algorithm is described, and the three dimensional (3D) high resolution RELAX is applied to collected radar data to provide accurate range, azimuth angle and Doppler estimations of the detected targets. Finally height measurement results of an entrance gate 4.5 m high are presented and discussed. The results show that the proposed height finding algorithm can achieve a root mean squared error of 0.26 m.

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A Novel Target-Height Estimation Approach Using Radar-Wave Multipath Propagation for Automotive Applications

Cited by 12 publications

References 9 publications

Height Estimation Methods for Object Detection in Automotive Radar Applications

Height Estimation Methods for Object Detection in Automotive Radar Applications

Radar Classification of Vehicles Using a Ground-Reflection Model

A new height-estimation method using FMCW radar Doppler beam sharpening

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