Titlebook: Satellite Communications; Robert M. Gagliardi Book 1991 Springer Science+Business Media New York 1991 satellite communication

公社

吃掉

VSAT and Mobile-Satellite Systems,ennas. One of the future challenges is the application of satellites to communicate directly with small, low-cost terminal stations. These stations have been given the acronym VSAT—for .—and refer to ground stations that operate with antenna apertures around 1 m or less. VSATs can be fixed terminals

conifer

978-94-010-9762-8Springer Science+Business Media New York 1991

流动才波动

Frequency-Hopped Communications,Spread-spectrum communications may also be achieved by using frequency hopping of the RF carrier. Instead of direct-phase shift modulation of a digital sequence onto the RF carrier, as in DS-CDMA, the sequence is used to frequency hop the carrier. In this chapter we examine the basic elements of this type of communication link.

Indolent

简洁

https://doi.org/10.1007/978-94-010-9760-4satellite communication

HALO

冲突

2625-9389 und Matthäuseffekt.Umfassend und präziseRobert King Merton (1910 – 2003) gilt heute längst als Klassiker der Soziologie. Er kann als der bedeutendste Soziologe der zweiten Hälfte des 20. Jahrhunderts und als Wegbereiter einer modernen Soziologie bezeichnet werden, die das konstitutive Verhältnis vo

惰性气体

Cyclotron resonance of quasi-two-dimensional polarons,clotron resonance absorption spectrum of a quasi-two-dimensional many-polaron system is calculated with inclusion of the full . of the electron-phonon interaction. Experimental results of several groups on the cyclotron mass in GaAs/Al.Ga.,As heterostructures are well described. We found that for el