telemetry reference
71Subcarrier — A subcarrier is a separate analog or digital signal carried on a main radio transmission, which carries extra information such as voice or data. More technically, it is an already modulated signal, which is then modulated into another signal of… …
72Automatic vehicle location — Automatic vehicle locating or AVL is a concept for determining the geographic location of a vehicle and transmitting this information to a point from where it was requested. Telelocating using location based services is a common term in the… …
731worldspace — Infobox Company company name = 1worldspace Inc. company company type = Public NASDAQ|WRSP foundation = 1990 location = Silver Spring, Maryland, U.S. key people = Noah A. Samara, Chairman CEO num employees = 492 (2005) industry = Broadcasting… …
74Chichi-jima — (父島?, Father Island), formerly known as Peel Island and in the 19th century known to the English as part of the Bonin Islands, is the largest island in the Ogasawara archipelago. Chichi jima is approximately 150 miles (241.4 km) north of Iwo …
75Northeast Blackout of 2003 — The Northeast Blackout of 2003 was a massive widespread power outage that occurred throughout parts of the Northeastern and Midwestern United States, and Ontario, Canada on Thursday, August 14, 2003, at approximately 4:15 pm EDT (20:15 UTC), with …
76Underwater acoustics — The field of underwater acoustics is closely related to a number of other fields of acoustic study, including sonar, transduction, acoustic signal processing, acoustical oceanography, bioacoustics, and physical acoustics.HistoryUnderwater sound… …
77Symphonie — The Symphonie satellites [http://www.theleme.net/aaaf ca/148.pdf AAAF Conference: From Symphonie to Spacebus, March 2006, by Jean Jacques Dechezelles] ] are the first communications satellites built by France and Germany and the first in the… …
78Ascension Island — Ascension Island …
79Attitude dynamics and control — The attitude of a body is its orientation as perceived in a certain frame of reference; providing a vector along which a spacecraft is pointing is a description of its attitude. Dynamics is the term for the modeling of changing conditions, due to …
80Delta-sigma modulation — Delta sigma (ΔΣ; or sigma delta, ΣΔ) modulation is a method for encoding high resolution or analog signals into lower resolution digital signals. The conversion is done using error feedback, where the difference between the two signals is… …
