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We reviewed the Department of Defense's (DOD) efforts to address the anti-radiation missile (ARM) threat. Specifically, we reviewed DOD's progress in developing effective countermeasures against the threat and the role of the Office of the Secretary of Defense (OSD) in overseeing ARM countermeasure development and coordinating the military services' efforts. As agreed with your Office, we have eliminated specific references to threat characteristics and U.S. weapon system performance in order to keep this report unclassified. Many U.S. weapon systems rely on radars for targeting and guidance. To detect targets, a radar transmits a series of brief pulses of energy and 'listens' for an echo. Some types of radars illuminate threats for targeting and guidance of weapons. Radars are the most vulnerable part of systems because they emit signals; thus, they can be acquired by several threat systems, including ARMs. ARMs home in on the radar emissions and try to destroy the antenna and adjacent equipment. Some ARMs can be launched at long distances from the targeted radar. Further, because ARMs do not emit signals, they can be difficult to detect and destroy or to avoid. (RH).
A key technical issue for future Air Force systems is to improve their ability to survive. Increased use of stealth technology is proposed by many to be the major element in efforts to enhance survivability for future systems. Others, however, suggest that the high cost and maintenance required of stealth technology make increased speed potentially more productive. To help address this issue, the Air Force asked the NRC to investigate combinations of speed and stealth that would provide U.S. aircraft with a high survival capability in the 2018 period, and to identify changes in R&D plans to enable such aircraft. This report presents a review of stealth technology development; a discussion of possible future missions and threats; an analysis of the technical feasibility for achieving various levels of stealth and different speeds by 2018 and of relevant near-term R&D needs and priorities; and observations about the utility of speed and stealth trade-offs against evolving threats.
This is the most up-to-the minute survey of the vital subject of sea-launched cruise missiles (SLCMs) to appear in ten years. It systematically analyzes the technological promises and weaknesses of SLCMs, especially conventionally armed, land-attack versions, explaining sophisticated technologies in language accessible to the general reader. Eric H. Arnett presents a cogent assessment of the crux of the SLCM issue for U.S. security, examining the coastal nation concept of the U.S. defensive position and investigating whether technology can adequately compensate for geography as Tomahawks and their Soviet counterparts give way to more advanced progeny. Arnett weighs the trade-offs in a frank discussion of the technologies and missions envisioned for current and future SLCMs. This well-researched, authoritative study evaluates both U.S. and Soviet SLCM arsenals, examines the role of arms control and unilateral initiatives in managing the dangers of SLCMs, and critically assesses the claims made for the Tomahawk conventionally armed cruise missile. The relevance of a changing international scene and domestic fiscal chaos to SLCM issues is fully appraised. The book's eight chapters lead the reader through all aspects of this complex field with admirable lucidity. Early chapters describe missions envisioned for U.S. conventionally armed SLCMs, and assess actual SLCM technology. Chapter 4 addresses the reciprocal problem of Soviet SLCMs, describing possible and likely roles of Soviet nuclear and conventionally armed SLCMs and the importance of offering responses. The increasingly important question of how SLCMs might be used in the developing world, both by and against U.S. forces and security partners is considered in Chapter 5--an especially relevant discussion in light of the apparent success of the Tomahawk SLCM in the 1991 war with Iraq. The next two chapters describe SLCM arms control as it has been practiced and discuss, from two vantage points, the roles of future arms-control and unilateral disarmament initiatives in addressing the disadvantages of SLCMs. Finally, the immediate implications of the previous chapters for policy practitioners are developed in a chapter that focuses on specific policy recommendations. This timely contribution is a reliable source of information on SLCMs for the interested public, the non-government arms control community, naval personnel, and members of both Congress and the administration.