Research on target positioning and signal processing based on the four-quadrant detector

• Autorzy: Shen Wen , Fang Shaoxi , Gao Xu , Cui Xuejian , Feng Shuanglong

Identyfikatory

DOI

10.24425/opelre.2025.154200

• Języki publikacji: EN

Abstrakty

EN

In a target location system, the spot size and spot position of the laser light, which are received by a four-quadrant detector, are closely related to the accuracy of the target location. To acquire a pA-level current, according to the characteristics of the signals generated by the four-quadrant detector and the related signal processing circuits, this paper designs signal processing circuits with amplification multiples of 140 dB and 160 dB. Meanwhile, a T‑shaped compensation network is added to the circuit to solve the problem of bandwidth and gain not being increased simultaneously. Theoretical calculations and numerical simulations are carried out to verify this circuit gain, phase margin, and other parameters. Simulation results show that the bandwidth of the signal processing circuit with an amplification of 140 dB is 199.256 kHz, the bandwidth of the signal processing circuit with an amplification of 160 dB is 100 kHz, and the test bandwidth is 96 kHz in 140 dB, which provides a strong support for the calculation of the spot position of the four-quadrant detector.

Słowa kluczowe

EN

four-quadrant PIN-type detector; signal processing; amplification circuit; bandwidth

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2025
• Tom: Vol. 33, No. 2
• Strony: art. no. e154200
• Opis fizyczny: Bibliogr. 27 poz., rys., tab., fot.

Twórcy

autor

Shen Wen

• Chongqing University of Posts and Telecommunications, Chongqing, 400065, PR, China

autor

Fang Shaoxi

• Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR, China
• Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR, China

autor

Gao Xu

• Chongqing University of Posts and Telecommunications, Chongqing, 400065, PR, China

autor

Cui Xuejian

• Chongqing University of Posts and Telecommunications, Chongqing, 400065, PR, China

autor

Feng Shuanglong

• Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR, China
• Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR, China

Bibliografia

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Uwagi

1. Science Foundation Innovation and Development Joint Fund Project (CSTB2023NSCQ-LZX0173) and the Chongqing Municipal Key Special Project for Technological Innovation and Application Development (CSTB2024TIAD-KPX0109).

2. Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).