Download Digital Satellite Communications by James J. Spilker PDF

By James J. Spilker

Show description

Read or Download Digital Satellite Communications PDF

Best electrical & electronic engineering books

Lithium Ion Batteries: Fundamentals and Performance

Rechargeable Batteries with excessive power density are in nice call for as strength resources for varied reasons, e. g. handies, 0 emission electrical cars, or load leveling in electrical strength. Lithium batteries are the main promising to meet such wishes due to their intrinsic discharbe voltage with fairly mild weight.

Digital control of dynamic systems

This well-respected, market-leading textual content discusses using electronic pcs within the real-time regulate of dynamic structures. The emphasis is at the layout of electronic controls that in attaining reliable dynamic reaction and small blunders whereas utilizing signs which are sampled in time and quantized in amplitude. either classical and glossy keep an eye on equipment are defined and utilized to illustrative examples.

Data, voice, and video cabling

Cabling is among the quickest altering applied sciences, and knowledge, Voice and Video Cabling, third version, has been up to date to deal with all of the most up-to-date advancements in premises cabling, together with applied sciences and purposes in copper, fiber, and instant cabling. this article is geared up to help within the knowing of cabling, by way of following a logical layout that covers heritage info on communications platforms and media first, after which delves into extra targeted discussions on each one media kind: copper, instant, and fiber.

Industrial Control Electronics

This re-creation maintains to supply state of the art assurance of the complete spectrum of business regulate, from servomechanisms to instrumentation. fabric at the parts, circuits, tools, and keep watch over strategies utilized in todays commercial automatic structures has been absolutely up-to-date to incorporate new info on thyristors and sensor interfacing and up to date info on AC variable pace drives.

Extra resources for Digital Satellite Communications

Example text

85 — 2 cells deep 10 in. 22 — 3 cells deep 12 in. 22 Page 51 (Cont'd) Table 2­1. , 32­36 lb, 80­90 lb/ft 3 — Page 52 (Cont'd) Table 2­1. 22 — — wood chips) (table continued on next page) Page 53 (Cont'd) Table 2­1. 35 (table continued on next page) 20 Page 54 (Cont'd) Table 2­1. 5 in. 375 in.  For properties of a particular product, use the value supplied by the manufacturer or by unbiased tests. /ft. c Resistance values are the reciprocals of C before rounding off C to two decimal places. d Lewis (1967).

This amount of heat is known as the latent heat of the air and moisture mixture.  Locate 73°F dry bulb and 55°F wet bulb temperature on the chart. 25 Btu.  Locate the 75°F dry bulb and 70°F wet bulb temperature point on the chart. 08 Btu. 83 Btu/lb of dry air.  Extend these points to the right to the grains of moisture scale and read 104 grains at the beginning of the process and 36 Figure 1­23. Latent heat change and grains of moisture added. Page 27 grains of moisture per pound of dry air at the end of the process.

The sensible heat ratio is an indicator of the percentage of sensible heat removed compared to the total heat removed.  It is representative of the lowest temperature at which the air can be supplied to the structure and still pick up the required amount of both sensible heat and latent heat.  Each source of heat gain or loss must be considered separately and must be taken into account when estimating the size of a heating and/or cooling unit for the building.  Thus, these loads are said to be estimated and are termed the heat load estimate.

Download PDF sample

Rated 4.33 of 5 – based on 34 votes