Efforts in developing a synthetic environment for testing light detection and ranging (LADAR) sensors in a hardware-in-the-loop simulation are continuing at the Aviation and Missile Research, Engineering, and Development Center of the U.S. Army Research, Engineering and Development Command (RDECOM). Current activities have concentrated on evaluating the optical projection techniques for the LADAR synthetic environment. Schemes for generating the optical signals representing the individual pixels of the projection are of particular interest. Several approaches have been investigated and tested with emphasis on operating wavelength, intensity dynamic range and uniformity, and flexibility in pixel waveform generation. This paper will discuss some of the results from these current efforts at RDECOM's System Simulation and Development Directorate's Electro Optical Technology Development Laboratory.
An approach to streamline the Hardware-In-the-Loop simulation and test process is under development. This technique
will attempt to provide a more flexible, scalable system. The overall goal of the system will be to reduce cost by
minimizing redundant development, operational labor and equipment expense. This paper will present historical progress
and current test results.
KEYWORDS: Field programmable gate arrays, Clocks, Switches, Transceivers, Solar concentrators, Computer programming, Standards development, Information operations, Telecommunications, Chemical elements
An approach to streamline the Hardware-In-the-Loop (HWIL) simulation development process is under development.
This Common HWIL technique will attempt to provide a more flexible, scalable system. The overall goal of the
Common HWIL system will be to reduce communication latencies, minimize redundant development, operational labor
and equipment expense. This paper will present current status and test results.
KEYWORDS: Field programmable gate arrays, Computer architecture, Sun, Standards development, Tolerancing, Data storage, Network architectures, Control systems, Data communications, Telecommunications
An approach to streamline the Hardware-In-the-Loop (HWIL) simulation development process is under evaluation. This
Common HWIL technique will attempt to provide a more flexible, scalable system. The overall goal of the Common
HWIL system will be to reduce cost by minimizing redundant development, operational labor and equipment expense.
This paper will present current results and future plans of the development.
KEYWORDS: Field programmable gate arrays, Standards development, Computer architecture, Data storage, Network architectures, Telecommunications, Chemical elements, Clocks, Data conversion, Prototyping
An approach to streamline the Hardware-In-the-Loop (HWIL) simulation development process is under evaluation. With
increased microprocessor speed, FPGA capacity and increased bus bandwidth over the last decade, a common interface
design may be able to support a large number of HWIL interfaces that were previously custom designed interfaces. The
Common HWIL approach will attempt to provide a more flexible, scalable system. The overall goal of the Common
HWIL system will be to reduce cost by minimizing redundant development and operational labor and equipment
expenses. This paper will present current results and future plans of the development.
A sensor system for the characterization of infrared laser radar scene projectors has been developed. Available sensor
systems do not provide sufficient range resolution to evaluate the high precision LADAR projector systems developed
by the U.S. Army Research, Development and Engineering Command (RDECOM) Aviation and Missile Research,
Development and Engineering Center (AMRDEC). With timing precision capability to a fraction of a nanosecond, it
can confirm the accuracy of simulated return pulses from a nominal range of up to 6.5 km to a resolution of 4cm.
Increased range can be achieved through firmware reconfiguration. Two independent amplitude triggers measure both
rise and fall time providing a judgment of pulse shape and allowing estimation of the contained energy. Each return
channel can measure up to 32 returns per trigger characterizing each return pulse independently. Currently efforts
include extending the capability to 8 channels. This paper outlines the development, testing, capabilities and limitations
of this new sensor system.
Currently, no infrared scene projector technology has the ability to completely simulate the real-world, high dynamic range temperatures encountered by modern infrared imagers. This paper presents the merging of two infrared scene technologies in an effort to develop the first truly high dynamic range infrared scene projector. The observed dynamic range capability simulates 250 Kelvin apparent background temperature to 1273 Kelvin maximum apparent temperature. The research combines the technologies of an emissive resistor array device and an optically scanned quantum well diode laser array projector. The high apparent temperature simulations are the direct result of luminescent infrared radiation emitted by the diode lasers. The simulation of low background apparent temperatures was obtained by enclosing the entire projector system in an environmental chamber operating at -40 °Celsius. The apparent temperature of the hybrid infrared scene projector was analytically calculated and compared to the measured results. Sample imagery from the high dynamic range infrared scene projector is furnished in the conclusion along with the final applicability of the hybrid approach.
Efforts in developing a synthetic environment for testing LADAR sensors in a hardware-in-the-loop simulation are continuing at the Aviation and Missile Research, Engineering, and Development Center (AMRDEC) of the U.S. Army Research, Engineering and Development Command (RDECOM). Current activities have concentrated on developing the optical projection hardware portion of the synthetic environment. These activities range from system level design down to component level testing. Of particular interest have been schemes for generating the optical signals representing the individual pixels of the projection. Several approaches have been investigated and tested with emphasis on operating wavelength, intensity dynamic range and uniformity, and flexibility in pixel waveform generation. This paper will discuss some of the results from these current efforts at RDECOM's Advanced Simulation Center (ASC).
Hardware-in-the-loop (HWIL) testing has been an integral part of the modeling and simulation efforts at the U.S. Army Aviation and Missile Research, Engineering, and Development Center (AMRDEC). AMRDEC's history includes the development and implementation of several unique technologies for producing synthetic environments in the visible, infrared, MMW and RF regions. With the emerging sensor/electronics technology, LADAR sensors are becoming more viable option as an integral part of weapon systems, and AMRDEC has been expending efforts to develop the capabilities for testing LADAR sensors in a HWIL environment. There are several areas of challenges in LADAR HWIL testing, since the simulation requirements for the electronics and computation are stressing combinations of the passive image and active sensor HWIL testing. There have been several key areas where advancements have been made to address the challenges in developing a synthetic environment for the LADAR sensor testing. In this paper, we will present the latest results from the LADAR projector development and test efforts at AMRDEC's Advanced Simulation Center (ASC).
Hardware-in-the-loop (HWIL) testing has, for many years, been an integral part of the modeling and simulation efforts at the U.S. Army Aviation and Missile Command's (AMCOM) Aviation and Missile Research, Engineering, and Development Center (AMRDEC). AMCOM's history includes the development, characterization, and implementation of several unique technologies for the creation of synthetic environments in the visible, infrared, and radio frequency spectral regions and AMCOM has continued significant efforts in these areas. This paper describes recent advancements at AMCOM's Advanced Simulation Center (ASC) and concentrates on Ladar HWIL simulation system development.
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