Using Satellites in the Classroom: A Guide for Science Educators.
The function, design, and ground statics ceguirements of the AMSAT-OSCAR ncn-ccmmercial space satellite system are described, and various experiments designed for direct student participation in space communications are provided in this text primarily written for the science educator. Six chapters include:) (1) an introduction to general satellite crtit problems and sclutione, (2) a number of tracking methods_ for ccmputing the positicns of 1 satellites, (3) onboard systems common to most satellites, (4) ai complete descripticn of each of the satellites currently in orbit or planned for the near future, (5) specifics fcr ground stations, and (6) four complete student satellite experiments, 15 detailed prcject outlines, and 19 suggestions for topics and activities. AppendiCes include listings of equipment manufactirers and publishers, as well as a glossary of terms. .(Author/RAO) #31g4g###########*31g#714########*###*######****************7144**714*71444714### * Reproductions supplied by EDRS are the ,best that car be made * * from the original document. * *********************************************************************** U.S. DEPARTMENT OF HEALTH. EDUCATION & WELFARE NATIONAL INSTITUTE OF EDUCATION THIS DOCUMENT HAS BEEN REPRO'. DUCED EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION. ORIGIN''ATING IT POINTS OF VIEW OF. JPINIOkS STATED-4:X) NOT NECESSARi'.Y REPRESENT OFFICIAL NATIONAL I,1 iTITUTE OF EDUCATION POSITION OR PGL:CY USING SATELLITES IN THE CLASSROOM: A GUIDE FOR SCIENCE EDUCATORS Martin R. Davidoff, Ph.D. "PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY
Intersatellite communication using the AMSAT-OSCAR 6 and AMSAT-OSCAR 7 radio amateur satellites
Ground-satellite-satellite-ground intersatellite communication using the AMSAT-OSCAR 6 and AMSAT-OSCAR 7 radio amateur satellites is described. The closest approach period (centered around the end of January, 1975) may represent the first use of two satellites interlinked directly to support communications between two earth stations.
Monte Carlo properties of spatial dependence LM tests
This paper compares the power and size of both spatial one-directional and robust to local misspecification LM test using Monte Carlo techniques under different set ups. Confirming the results found in Anselin et al . (1996), under local misspecification the robust LM test improves its size and power of tests. However, under no misspecification, the robust LM test is severely penalized and the usual one-directional LM test has a much better performance.