Photonic System for Simultaneous and Unambiguous Measurement of Angle-of-Arrival and Doppler-Frequency-Shift

Li, Guangyi; Shi, Difei; Wang, Lu; Li, Ming; Zhu, Ning Hua; Li, Wei

doi:10.1109/jlt.2022.3142386

Cited by 25 publications

(9 citation statements)

References 30 publications

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“…θ the phase difference of the two echo signals, which is introduced by the AOA κ and antenna spacing d (usually λ /2). The AOA can be expressed by the phase difference as [ 19 ].

…”

Section: Principlementioning

confidence: 99%

“…Whereas, an optical bandpass filter (OBPF) or a wavelength-division multiplexer (WDM) is required to select or separate the optical signals, restricting the operating range of the whole system. In 2022, a photonic approach for simultaneously measuring DFS and AOA based on a dual-polarization dual-drive Mach–Zehnder modulator (DPol-DDMZM) is proposed [ 19 ], which can not only measure DFS without detection ambiguity, but also acquire the unambiguous AOA measurement with a range from −66.44° to 66.44° and errors of less than ±2.2°. However, a power coupler must combine the received echo signal and the reference signal before driving the modulator.…”

Section: Introductionmentioning

confidence: 99%

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Photonics-Based Simultaneous DFS and AOA Measurement System without Direction Ambiguity

et al. 2023

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A novel scheme that can simultaneously measure the Doppler frequency shift (DFS) and angle of arrival (AOA) of microwave signals based on a single photonic system is proposed. At the signal receiving unit (SRU), two echo signals and the reference signal are modulated by a Sagnac loop structure and sent to the central station (CS) for processing. At the CS, two low-frequency electrical signals are generated after polarization control and photoelectric conversion. The DFS without direction ambiguity and wide AOA measurement can be real-time acquired by monitoring the frequency and power of the two low-frequency electrical signals. In the simulation, an unambiguous DFS measurement with errors of ±3 × 10−3 Hz and a −90° to 90° AOA measurement range with errors of less than ±0.5° are successfully realized simultaneously. It is compact and cost-effective, as well as has enhanced system stability and improved robustness for modern electronic warfare systems.

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“…θ the phase difference of the two echo signals, which is introduced by the AOA κ and antenna spacing d (usually λ /2). The AOA can be expressed by the phase difference as [ 19 ].

…”

Section: Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photonics-Based Simultaneous DFS and AOA Measurement System without Direction Ambiguity

et al. 2023

View full text Add to dashboard Cite

show abstract

“…where Ex(t) and Ey(t which is introduced by the AOA  and antenna spacing d (usually λ/2). The AOA can be expressed by the phase difference as [18] arcsin( )…”

Section: Principlementioning

confidence: 99%

“…Whereas, an optical bandpass filter (OBPF) or a wavelength-division multiplexer (WDM) is required to select or separate the optical signals, restricting the operating range of the whole system. In 2022, a photonic approach for simultaneously measuring DFS and AOA based on a dual-polarization dual-drive Mach-Zehnder modulator (DPol-DDMZM) is proposed [18], which can not only measure DFS without detection ambiguity, but also acquire the unambiguous AOA measurement with a range from -66.44° to 66.44° and errors of less than ±2.2°. However, a power coupler must combine the received echo signal and the reference signal before driving the modulator.…”

Section: Introductionmentioning

confidence: 99%

“…The DFS (including values and direction) and the non-ambiguous AOA in the range of 180° can be realized by measuring the frequency and power of the output signals. Compared with the scheme in [17,18], the system is more suitable for the modern electronic warfare system, for it not only considers the real-world applications to separate the SRU and CS, but also uses a Sagnac loop structure in the SRU to improve its robustness to environmental disturbances.…”

Section: Introductionmentioning

confidence: 99%

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Photonics-based Simultaneous DFS and AOA Measurement system Without Direction Ambiguity

Meng¹,

Zhu²,

Wang³

et al. 2022

Preprint

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A novel scheme that can simultaneously measure the Doppler frequency shift (DFS) and angle of arrival (AOA) of microwave signals is proposed. At the signal receiving unit (SRU), two echo signals and the reference signal are modulated by a Sagnac loop structure and sent to the central station (CS) for processing. At the CS, two low-frequency electrical signals are generated after polarization control and photoelectric conversion. The DFS without direction ambiguity and wide AOA measurement can be real-time acquired by monitoring the frequency and power of the two low-frequency electrical signals. In the simulation, an unambiguous DFS measurement with errors of ±3×10-3 Hz and a -90° to 90° AOA measurement range with errors of less than ±0.5° are realized. The safety and robustness of the system to environmental disturbance are improved, and it is more suitable for the modern electronic warfare system.

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Photonic system for Doppler-frequency-shift and Angle-of-arrival simultaneous measurement using dual-parallel Mach–Zehnder modulator

Tao

et al. 2023

Optics Communications

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Photonic System for Simultaneous and Unambiguous Measurement of Angle-of-Arrival and Doppler-Frequency-Shift

Cited by 25 publications

References 30 publications

Photonics-Based Simultaneous DFS and AOA Measurement System without Direction Ambiguity

Photonics-Based Simultaneous DFS and AOA Measurement System without Direction Ambiguity

Photonics-based Simultaneous DFS and AOA Measurement system Without Direction Ambiguity

Photonic system for Doppler-frequency-shift and Angle-of-arrival simultaneous measurement using dual-parallel Mach–Zehnder modulator

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