Implementation of Range Doppler Migration Synthesis for Radar Target Simulation

Diewald, Axel; Antes, Theresa; Nuß, Benjamin; Zwick, Thomas

doi:10.1109/vtc2021-spring51267.2021.9448793

Cited by 9 publications

(7 citation statements)

References 6 publications

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“…For the measurement campaign, a digital RTS system, whose basic operational components are described in [10] and [31], is utilized. The modular front ends were arranged in a semicircle formation at a distance of R c = 1 m and behind a curved metal sheet with round cutouts for the front end antennas.…”

Section: Measurementmentioning

confidence: 99%

“…However, sample buffering at the given sample rate only allows for an delay step size of ∆τ rts,buf = 0.25 ns, which will later proof to be too coarse for the parameter sweep that is necessary for the calibration and achieving phase coherency. Therefore, fractional delay filters, that enable the application of arbitrary fractions of the sample period [10], were used.…”

Section: Measurementmentioning

confidence: 99%

“…In order for this environment to be as credible and realistic as possible, the virtual radar targets must be generated as accurate as possible in regards of their characteristics. Recent RTS systems have already achieved a setting point precision higher than the resolution of common and even future radars in terms of range, Doppler and radar cross section (RCS) [7]- [10]. Nonetheless, the simulation of the angle of arrival (AoA) in current RTS systems has yet to meet the angle estimation capabilities of their counterpart.…”

Section: Introductionmentioning

confidence: 99%

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Arbitrary Angle of Arrival in Radar Target Simulation

Diewald¹,

Nuß

Pauli

et al. 2022

IEEE Trans. Microwave Theory Techn.

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Automotive radar sensors play a key role in the current development of autonomous driving. Their ability to detect objects even under adverse conditions makes them indispensable for environment-sensing tasks in autonomous vehicles. The thorough and in-place validation of radar sensors demands for an integrative test system. Radar target simulators (RTS) are capable of performing over-the-air validation tests by creating artificial radar echoes that are perceived as targets by the radar under test. Since the authenticity and credibility of these targets is based on the accuracy with which they are generated, their simulated position must be arbitrarily adjustable. In this paper, a new approach to synthesize virtual radar targets at an arbitrary angle of arrival is presented. The concept is based on the superposition of the returning signals of two adjacent RTS channels. A theoretical model describing the basic principle and its constraints is developed. Additionally, a measurement campaign is conducted that verifies the practical functionality of the proposed scheme.

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Section: Measurementmentioning

confidence: 99%

Section: Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Arbitrary Angle of Arrival in Radar Target Simulation

Diewald¹,

Nuß

Pauli

et al. 2022

IEEE Trans. Microwave Theory Techn.

Self Cite

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show abstract

“…A measurement was conducted utilizing a digital RTS system whose individual components are presented in [10] and [25]. The measurement setup is depicted in Fig.…”

Section: Measurementmentioning

confidence: 99%

“…To make this environment as credible and realistic as possible, the virtual radar targets must be generated as accurately as possible in terms of their properties. Recent RTS systems have already achieved a set-point precision that is higher than the resolution of conventional and even future radars in regards of range, Doppler and radar cross section (RCS) [7]- [10]. However, the simulation of the angle of arrival (AoA) in both azimuth and elevation is not yet able to achieve the angle estimation capabilities of their counterpart.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Arbitrary Angle of Arrival in Radar Target Simulation

Diewald¹,

Nuß²,

Johannes³

et al. 2022

Preprint

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Automotive radar sensors play a key role in the current development of advanced driver assistance systems (ADAS). Their ability to detect objects even under adverse weather conditions makes them indispensable for environmentsensing tasks in autonomous vehicles. Since an operational failure presents a potential risk to human life, thorough and practical validation testing must be performed, requiring an integrative test solution. Radar target simulators (RTS) are capable of performing over-the-air validation tests by generating virtual radar echoes that are perceived as targets by the radar under test (RuT). Since the authenticity and credibility of these targets is based on the accuracy with which they are created, their simulated position must be arbitrarily adjustable. In this work, an existing approach to synthesize virtual radar targets at an arbitrary angle of arrival (AoA) is extended to cover both, the azimuth and elevation domain. The concept is based on the superposition of the returning signals from four neighboring RTS channels. A theoretical model describing the basic principle and its constraints is developed. In addition, a measurement campaign is conducted to verify the practical functionality of the proposed approach.

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A novel approach to simulate moving targets in automotive radar applications

Zhang,

Xu,

Jiang

et al. 2024

IET Radar Sonar & Navi

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In the field of automotive radar testing, radar target simulators (RTS) based on fibre delay technology are limited by production processes, typically achieving distance steps of only 1 cm. Meanwhile, simulators utilising digital DRFM (Digital Radio Frequency Memory) technology face similar constraints, with a minimum distance step size of 3 cm, dictated by the ADC sampling rate (corresponding to a sampling rate of 5 GHz). In both types of simulators, abrupt changes in target distance result in phase discontinuities due to the step size being greater than the wavelength, ultimately distorting the target velocity spectrum. This paper proposes a phase compensation method based on instantaneous frequency measurement for a digital DRFM simulator, which ensures the continuity of the phase in the RTS output signal, achieving an ideal simulation of the target velocity spectrum. Additionally, it enables millimetre‐level distance stepping.

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Implementation of Range Doppler Migration Synthesis for Radar Target Simulation

Cited by 9 publications

References 6 publications

Arbitrary Angle of Arrival in Radar Target Simulation

Arbitrary Angle of Arrival in Radar Target Simulation

Two-Dimensional Arbitrary Angle of Arrival in Radar Target Simulation

A novel approach to simulate moving targets in automotive radar applications

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