Last edited by Mikree
Sunday, August 9, 2020 | History

2 edition of Hybrid Computer Simulation of A Ladar Target Imaging System. found in the catalog.

Hybrid Computer Simulation of A Ladar Target Imaging System.

Canada. Defence Research Establishment Valcartier.

Hybrid Computer Simulation of A Ladar Target Imaging System.

by Canada. Defence Research Establishment Valcartier.

  • 202 Want to read
  • 29 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesCanada Drb Drev Technical Note -- 2093, Canada Drb Project -- D97-82-10
ContributionsBoulter, J.F.
ID Numbers
Open LibraryOL21887836M

The default parameters used in this study are set as followings: radiation source wavelength is 1 μm, C n 2 = × 10 − 16 m − 2 / 3, resolutions of range and azimuth are m, inner scale and outer scale are 1 mm and 32 m, result of structure function with different grid numbers is shown in Fig. -Carlo random factor method overcomes the shortage of deficiency. Shop Target for Educational Software Computers & Technology Books you will love at great low prices. Free shipping on orders of $35+ or same-day pick-up in store.

ix Contents Preface .. xi Mathematical Notation .. xiii. range, the ladar produces an angle–angle-range, or 3-D, image. We have developed a 3-D ladar with single-photon sensitivity, 3-cm-range depth precision, adjustable angular resolution, and pixels. The illu-minator is a Lincoln Laboratory-built, diode-laser-pumped, passively Q-switched microchip laser operating at nm.

Most LADAR (laser radar, LIDAR) imaging systems use pixel-basis sampling, where each azimuth and elevation resolution element is uniquely sampled and recorded. We demonstrate and examine alternative sampling and post-detection processing schemes where recorded measurements are made in alternative bases that are intended to reduce system power consumption and laser emissions. This two volume book set explores how sensors and computer vision technologies are used for the navigation, control, stability, reliability, guidance, fault detection, self-maintenance, strategic re-planning and reconfiguration of unmanned aircraft systems (UAS). Volume 1 concentrates on UAS control and performance methodologies including Computer Vision and Data Storage, Integrated Optical.


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Hybrid Computer Simulation of A Ladar Target Imaging System by Canada. Defence Research Establishment Valcartier. Download PDF EPUB FB2

Download Citation | Simulation of 3D LADAR imaging system using fast target response generation approach | A new approach has been used to generate the target. Simulation of 3D LADAR Imaging System using Fast Target Response Generation Approach Conference Paper in Proceedings of SPIE - The International Society for Optical Engineering A new approach has been used to generate the target response for the Laser Detection and Ranging or laser radar (LADAR) simulator.

This approach is fast and able to deal with high scanning resolution and complex target models. This leads to a more efficient LADAR simulator and opens up the possibility for simulating more complex scenes LADAR images.

The approach is to derived the target. Target reflectivity and angular dispersion Dispersion upon reflection LADAR receiver throughput and efficiency Types of LADAR Systems and Applications Three-dimensional imaging LADAR systems Sources of Noise in LADAR Systems Photon counting noise Laser speckle noise.

When developing a new LADAR system, a simulation study can be useful to assess its performance. In this paper, we propose a method for creating a simulation for a Geiger-mode imaging LADAR system and its performance assessment.

The proposed simulation technique has three main parts—geometry, radiometry and detection by:   This leads to a more efficient LADAR simulator and opens up the possibility for simulating more complex scenes LADAR images.

The approach is to derived the target angular ranges algorithms in order to directly select the target's parts that lie in the laser field (parts required for target response generation) instead of checking the whole.

performed a simulation with the real system parameters of commercial airborne LADAR systems for the analysis of scanning patterns.

The previous studies related to FPA are as follows: the Center for Advanced Imaging LADAR (CAIL) in the University of Utah, USA, performed a modeling simulation for linear mode imaging. Direct-Detection LADAR Systems Written for engineers, this book introduces the basic concepts and operation of 3D imaging LADAR systems.

Topics include laser range equations, sources of noise in LADAR signals, LADAR waveforms, and algorithms for detecting, ranging, and tracking targets. option for imaging with LADAR. In the case of weak signals even single photon detection can be achieved using a Geiger-mode avalanche photodiode (GmAPD) [5] for either single point or imaging systems.

Because this study is interested in developing the radiometric aspect of LADAR, the simulation will assume a single. This text is designed to introduce engineers-in-training to the basic concepts and operation of 3D imaging LADAR systems.

The book covers laser range equations; sources of noise in LADAR signals; LADAR waveforms; the effects of wavefront propagation on LADAR beams through optical systems and atmospheric turbulence; algorithms for detecting, ranging, and tracking targets; and comprehensive.

ladar for autonomous navigation and hazard avoidance for air and ground vehicles (Smart Cities) hostile environment applications (e.g., underwater, high radiation, high or low temperatures, etc.) medical applications of imaging/sensing methods employing laser systems; advanced cost-reduction techniques and more effective system architectures.

A new laser detection and ranging (LADAR) simulator has been developed, using MATLAB and its graphical user interface, to simulate direct detection time of flight LADAR systems, and to produce 3D simulated scanning images under a wide variety of conditions.

This simulator models each stage from the laser source to data generation and can be considered as an efficient simulation tool. Simulation of 3D Laser Radar Systems 38 LINCOLN LABORATORY JOURNAL VOL NUMBER 1, FIGURE 1.

Basic concept for three-dimensional (3D) angle-angle-range laser radar (ladar) using an imaging detector array. The entire scene is flood illuminated and imaged on a single laser pulse.

Each pixel in the avalanche photodiode. The book covers laser range equations; sources of noise in LADAR signals; LADAR waveforms; the effects of wavefront propagation on LADAR beams through optical systems and atmospheric turbulence; algorithms for detecting, ranging, and tracking targets; and comprehensive system simulation.

Computer code for accomplishing the many examples Reviews: 1. Abstract: A pulsed laser radar (ladar) based object recognition system with applications to automatic target recognition is reported.

The approach used is to fit the sensed range images to the range templates extracted using laser physics based simulation of Computer Aided Design target models.

A new approach has been used to generate the target response for the Laser Detection and Ranging or laser radar (LADAR) simulator. This approach is fast and able to deal with high scanning requirements and complex target models.

This leads to a more efficient LADAR simulator and opens up the possibility for simulating more complex scenes LADAR images. The approach is to derived the target. As LADAR systems applications gradually become more diverse, new types of systems are being developed.

When developing new systems, simulation studies are an essential prerequisite. A simulator enables performance predictions and optimal system parameters at the design level, as well as providing sample data for developing and validating application algorithms.

Lidar (/ ˈ l aɪ d ɑːr /, also LIDAR, LiDAR, and LADAR) is a method for measuring distances by illuminating the target with laser light and measuring the reflection with a sensor.

Differences in laser return times and wavelengths can then be used to make digital 3-D representations of the target. It has terrestrial, airborne, and mobile applications. A custom-designed laser scanner system was utilized to collect point cloud data; multiple video camera arrays were used to recognize and track the dynamic objects quickly, such as a crane boom.

The dynamic target object's point clouds were updated separately by a smart scan method. Imaging laser radar (ladar) systems have been developed for automatic target identification in surveillance systems.

Ladar uses the range value at the target pixels to estimate the target's 3-D shape and identify the target. For targets in clutter and partially hidden targets, there are ambiguities in determining which pixels are on target that lead to uncertainties in determining the target's.

Direct Detection LADAR Systems is designed to introduce engineers-in-training to the basic concepts and operation of 3D- imaging LADAR systems.

The book covers laser range equations; sources of noise in LADAR signals; LADAR waveforms; the effects of wavefront propagation on LADAR beams through optical systems and atmospheric turbulence; algorithms for detecting, ranging, and tracking .to conventional image systems based on 2D images.

Self-guided vehicles or navigation support systems require new sensors which allow the detection of images in real time [1]. Moreover, there’s a need of a higher resolution systems for 3D imaging, that encourages the research and implementation of these LIDAR systems.

Abstract. In the target detection based on a laser imaging system, target classification and identification means determining the types and identifying the features of targets by processing their laser images including range, gray, waveform and level images.