浓缩
发表于 2025-3-23 10:31:53
teger as the sum of an even number of squares, and the asymptotics of partition functions. Melvyn B. Nathanson is Professor of Mathematics at the City University of New York (Lehman College and the Graduate Center). He is the author of the two other graduate texts: Additive Number Theory: The Classi
Breach
发表于 2025-3-23 16:06:39
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defendant
发表于 2025-3-23 21:45:29
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过于平凡
发表于 2025-3-24 02:13:22
Radar Homing on Surface Targets,. However, by the use of mm waves, seekers are now available with sufficiently good angular resolution to pick out a large battlefield target, such as an armoured fighting vehicle (AFV) against the background of clutter.
牛马之尿
发表于 2025-3-24 06:14:00
Future Developments,1. This brings out the strong influence of the growth of digital techniques and large scale integration, of microwave microcircuits and array antennas, and of microwave solid state sources. In addition, with the growth of millimetre-wave technology the anti-vehicle homer has become a practical proposition.
很像弓]
发表于 2025-3-24 08:56:41
Range Performance,n is the usual vehicle for evaluating range performance. A full discussion and detailed derivations can be found in standard works such as Skolnik. but a simple derivation follows for the benefit of those readers to whom the concept may be unfamiliar.
推崇
发表于 2025-3-24 14:11:13
Basic Principles,are the successful use of surface to air missiles in the Israeli-Arab war of 1973, the sinking of the destroyer . by a Russian-made anti-ship missile, and the extensive use of surface to air and air to air missiles in the Vietnam conflict; more recent are the extensive and devastating use of surface
Delirium
发表于 2025-3-24 14:52:45
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preservative
发表于 2025-3-24 22:36:31
Seeker Antenna Systems,continuously. A pair of rate gyroscopes mounted orthogonally on the gimbals senses sight line rate with respect to space axes in each plane, providing the information for proportional navigation. Angle tracking methods already in use or under development fall into the following categories
overture
发表于 2025-3-24 23:45:15
Principles of Doppler Homing Guidance,nd from any background of terrain and precipitation clutter. Early Doppler homers used pure CW illumination of the target, but recently the tendency has been to employ some type of modulation such as pulse or FMCW, leading to pulse-Doppler systems etc. However, whatever the nature of the modulation,