Defence electronics and electro-optical systems
Handheld terminals, imaging and targeting systems, 905 nm laser-based range measurement and SiPM detector electronics.
In electro-optical systems, optics, the analog front end, high-speed digital processing and mechanical design form a single product. Work in this area is handled at system level, from laser driver and detector electronics to image-processing hardware, and from handheld ergonomics to environmental robustness.
The Laser Rangefinder and the SiPM Detector and 905 nm Laser are products developed in this area.
Handheld terminals
In devices carried by hand in the field, power consumption, battery management, display readability and shock / ingress requirements drive the design. A microcontroller- or application-processor-based architecture, low-power modes, the user interface and communications (wired / RF) are designed together.
Imaging and targeting systems
Image sensor interfaces, FPGA-based pre-processing, video streaming and target-marking functions; optical axis alignment and calibration. FPGA and embedded processor are used together for real-time processing of image data; range and orientation data are merged with the image on the same time base.
Laser-based systems
High-current driver circuits with nanosecond-scale pulse widths for 905 nm pulsed laser diodes; SiPM (silicon photomultiplier) and APD-based receiver front ends; timing electronics and signal processing for time-of-flight measurement. Eye-safety class, atmospheric attenuation and target reflectivity are design inputs.
Related products and services
Laser Rangefinder
- 905 nm wavelength
- 3 km measurement range
- 0.6 m measurement accuracy
- 6× zoom
SiPM Detector and 905 nm Laser
- 905 nm wavelength
- SiPM-based detector
- 10–100 ns laser pulse width
- 80 A laser peak current
Related technical notes
Noise floor, dark count rate and temperature compensation in SiPM front ends
SiPM microcell model, dark counts and correlated noise, breakdown-voltage temperature coefficient, bias compensation, front ends and LiDAR thresholds.
Timing precision in 905 nm pulsed time-of-flight ranging: walk error, jitter and time-stamping architectures
Jitter and walk error in 905 nm pulsed TOF ranging: derivations, CFD and time-domain correction, TDC architectures, error budget and verification.
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