Measurement of distance, velocity and angle of arrival using FMCW-CW combined waveform

Duraj, D.; Płotka, Marek; Rzymowski, Mateusz; Nyka, Krzysztof; Kulas, Łukasz

doi:10.1109/mikon.2016.7491942

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…The direction from which the signal is received, which is known as the angle of arrival (AOA), is an important parameter in many military and civilian systems. These include target tracking systems where the target can be a missile, an aircraft or a person using a smartphone, collision avoidance self-driving systems, and indoor positioning systems [1][2][3]. Systems implemented using microwave photonics technologies have the ability to operate at high frequencies and over a wide frequency range with immunity to electromagnetic interference.…”

Section: Introductionmentioning

confidence: 99%

“…(1) also shows the output first order RF modulation sideband power is dependent on the modulation index, which in turn depends on the incoming microwave signal amplitude. The signal amplitude needs to be measured or the modulation index dependence in (1) needs to be removed in order to determine the AOA based on the system output power. This paper presents a structure to address the above issues, which also has the ability to measure the AOA of multiple microwave signals.…”

Section: Introductionmentioning

confidence: 99%

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Photonic Approach for Measuring AOA of Multiple Signals With Improved Measurement Accuracy

2020

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The objective of this paper is to present a microwave photonic system that can measure the angle of arrival (AOA) of multiple microwave signals with improved measurement accuracy. It is based on a photonic mixer approach to down convert the incoming microwave signals into IF signals, which enables a low-frequency electrical spectrum analyser to be used for measuring the power of the IF signals to determine the incoming microwave signal AOAs. AOA measurement errors can be reduced by operating the optical modulator at a different transmission point for a different range of microwave signal AOA. The system also has the ability to remove the incoming microwave signal amplitude dependence in the AOA measurement. Measured results demonstrate 0°−81.5°AOA measurement with less than ±2°errors over the 0°−30°and 30°−81.5°AOA measurement range when the optical modulator is biased at the minimum and maximum transmission point respectively. The errors remain below ±2°even when there is a ±0.1 dB change in the output IF signal power. AOA measurement of two microwave signals is also demonstrated.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photonic Approach for Measuring AOA of Multiple Signals With Improved Measurement Accuracy

2020

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“…However, it would bring out some ghost targets and missed targets as well. A FMCW-CW combined waveform [3] was proposed to reduce the ghost targets while missed targets still exist easily. Another waveform is Frequency-shift keying (FSK) wave [4].…”

Section: Introductionmentioning

confidence: 99%

A FMCW-FSK Combined Waveform for Multi-Target Detection in FMCW Radar

Shen¹,

Che²,

Deng³

et al. 2017

dtcse

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Frequency modulated continuous wave (FMCW) radar has been widely applied in many fields. Modulated waveform is usually designed to solve the coupling problem of range and velocity in multi-target situation. A FMCW-FSK combined waveform is proposed in this work, which takes the advantages of FMCW waveform and FSK waveform. Compared to the FMCW waveform and FSK waveform, this method can reduce the ghost targets and the missed targets furthest with minor error and less calculation cost.

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Frequency Modulated Continuous Wave Radar Evaluation for Internet of Things Applications

Leon¹,

Tinoco²,

Farinango³

et al. 2021

2021 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)

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Measurement of distance, velocity and angle of arrival using FMCW-CW combined waveform

Cited by 5 publications

References 9 publications

Photonic Approach for Measuring AOA of Multiple Signals With Improved Measurement Accuracy

Photonic Approach for Measuring AOA of Multiple Signals With Improved Measurement Accuracy

A FMCW-FSK Combined Waveform for Multi-Target Detection in FMCW Radar

Frequency Modulated Continuous Wave Radar Evaluation for Internet of Things Applications

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