Development of pulsed‐laser three‐dimensional imaging flash lidar using <scp>APD</scp> arrays

Hao, Qun; Tao, Yu; Cao, Jie; Cheng, Yang

doi:10.1002/mop.32978

Cited by 28 publications

(13 citation statements)

References 126 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…LiDAR systems obtain the distance information by measuring the time difference between emitting and receiving optical signals. The system can be classified as mechanical scanning with a collimated beam or flash irradiation setups with a diverging irradiance [ 2 , 3 , 4 , 5 ]. The specifications of some metrics for LiDAR systems, such as detection range, field of view (FOV), and angular resolution, are suggested in many studies [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Requirements for Automotive LiDAR Systems

Dai

Wolf

Ley

et al. 2022

Sensors

View full text Add to dashboard Cite

Light detection and ranging (LiDAR) are fundamental sensors that help driving tasks for autonomous driving at various levels. Commercially available systems come in different specialized design schemes and involve plenty of specifications. In the literature, there are insufficient representations of the technical requirements for LiDAR systems in the automotive context, such as range, detection quality, resolving power, field of view, and eye safety. For this reason, the requirements above require to be derived based on ADAS functions. The requirements for various key LiDAR metrics, including detection range, field of view, angular resolution, and laser safety, are analyzed in this paper. LiDAR systems are available with various radiation patterns that significantly impact on detection range. Therefore, the detection range under various radiation patterns is firstly investigated in this paper. Based on ADAS functions, the required detection range and field of view for LiDAR systems are examined, taking into account various travel speeds to avoid collision and the coverage of the entire lane width. Furthermore, the angular resolution limits are obtained utilizing the KITTI dataset and exemplary 3D detection algorithms. Finally, the maximum detection ranges for the different radiation patterns are compared under the consideration of derived requirements and laser safety.

show abstract

Section: Introductionmentioning

confidence: 99%

Requirements for Automotive LiDAR Systems

Dai

Wolf

Ley

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…To achieve non-scanning flash 3D imaging, most planar-array-based single-photon LiDARs employ a SPAD array that is directly placed on the focal plane of the receiving telescope and use a laser source with a large divergence angle to cover the entire receiving field-of-view (FoV) [4,21,22]. Given the detector's limited fill factor, however, this approach wastes most of the laser energy.…”

Section: Introductionmentioning

confidence: 99%

Design and Demonstration of a Novel Long-Range Photon-Counting 3D Imaging LiDAR with 32 × 32 Transceivers

et al. 2022

View full text Add to dashboard Cite

Geiger-mode single-photon LiDAR is an important tool for long-distance three-dimensional remote sensing. A planar-array-based photon counting LiDAR that uses 32-by-32 fiber arrays coupled to an optical lens as a transceiver unit was developed. Using transmitters and receivers with the same design, the proposed device easily achieves a high-precision alignment of 1024 pixels and flexible detection field-of-view design. The LiDAR uses a set of relay lenses to couple echoes from the receiving fiber arrays to the pixels of a planar-array single-photon detector, which has a resolution enhanced by a factor of four (64-by-64) relative to the fiber array to reduce cross talk from neighboring pixels. The results of field experiments demonstrate that the proposed LiDAR can reconstruct a three-dimensional image from a distance of 1600 m. Even at an acquisition time of only 40 ms, targets with an area of approximately 50% can still be identified from 200 frames. These results demonstrate the potential of the LiDAR prototype for use in instantaneous high-density point-array measurement and long-range wide-FoV 3D imaging, which can be used in remote sensing applications such as airborne surveys and mapping. In the future, we will integrate the proposed LiDAR prototype and the pose measurement system to take the aircraft-based 3D imaging remote sensing experiments.

show abstract

“…Passive mode-locking is a well-known technique to achieve ultrashort pulses for a great variety of potential applications with the advantage of system simplicity and compactness. [1][2][3] Although passive mode-locking in fiber lasers can be developed by using various approaches, the use of saturable absorbers (SAs) has emerged as a promising technique since the SA properties can be tailored to yield the desirable pulse characteristics.…”

Section: Introductionmentioning

confidence: 99%

Noise‐like pulse generation with tungsten trioxide/polydimethylsiloxane‐clad microfiber saturable absorber

Hadi

Muhammad

Yusoff

et al. 2022

Micro & Optical Tech Letters

View full text Add to dashboard Cite

We report the formation of noise-like pulse (NLP) with tungsten trioxide/polydimethylsiloxane-clad microfiber saturable absorber integrated in a ring-cavity erbiumdoped fiber laser. The NLP operation was confirmed by the presence of a coherence spike on top of a broad pedestal in the autocorrelation trace, with the measured pulse width value of 410 fs and 3.56 ps respectively. By increasing the pump power from the mode-locking threshold of 280-3300 mW, the spectral bandwidth was stretched from 22.3 to 22.8 nm, while the output power increased from to 1.9 to 24.3 mW. The maximum pulse energy of 3.5 nJ was generated at a repetition rate of 7 MHz. The signal-to-noise ratio was measured to be 53.8 dB, which indicated a good stability of pulse laser.

show abstract

Development of pulsed‐laser three‐dimensional imaging flash lidar using APD arrays

Cited by 28 publications

References 126 publications

Requirements for Automotive LiDAR Systems

Requirements for Automotive LiDAR Systems

Design and Demonstration of a Novel Long-Range Photon-Counting 3D Imaging LiDAR with 32 × 32 Transceivers

Noise‐like pulse generation with tungsten trioxide/polydimethylsiloxane‐clad microfiber saturable absorber

Contact Info

Product

Resources

About