Advanced real-time dynamic secne generation techniques for improved performance and fidelity

摘要

Recent advanes in real-time synthetic sene generation for Hardware-in-the-loop (HWIL) testign at the U.S. Army Aviation and Missile Command (AMCOM) Aviation and Missile Research, Developemnt, and Enginering Center (AMRDEC) improve both performance and fidelity. Modeling ground target scenarios requires tradeoffs because of limited texture memory for imagery and limited main memory for elevation data. High-resolution insets have been used in the past to provide better fidelity in specific areas, such as in the neighborhood of a target. Improveemtns for ground scenarios include smooth transitions for high-resolution insets to reduce high spatial frequency artifacts at the borders of the inset regions and dynamic terrain paging to support large area databases. Transport lag throught he sene generation system, including sensor emulation and interface components, has been dealt with in the past through the use of sub-window extraction from oversize scenes. This compensates for spatial effects of transport lag but not temporal effects. A new system ahs been developed and used successfully to compensate for a flashing coded beacon in the scene. Other techniques have been developed to synchronize the scene generator with the seeker under test (SUT) and to model atmospheric effects, sensor optics and electronics, and angular emissivity attenuation.