An a priori model for the reduction of nutation observations: KSV1994.3 nutation series

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

AN A PRIORI MODEL FOR THE REDUCTION OF NUTATION OBSERVATIONS: A'SVi 994.3 NUTATION SERIES

r • Abst.ra.ct! We discuss the formulation of a new nutation series to be used 'in the reduction of modern space geodetic data. The motivation for devel: oping such a series is to develop a nutation series that has smaller short . period errors than the IAU 1980 nutat ion series and to provide a series that can be used wi th techniques such as the Global Positioning System (GPS) eo • that have ...

متن کامل

Improvement of Nonrigid - Earth Nutation Theory by Adding a Model Free Core Nutation Term

Abstract. From the analysis of VLBI observational data compiled by USNO (U.S. Naval Observatory) from MJD 44089.994 to 51618.250 (McCarthy, 2000), we showed that a strong peak around 400 sidereal days in the spectrum of its di erences from the IERS96 nutation theory could be explained by adding a model Free Core Nutation (FCN) term in the form of a single damped oscillation. Then we developed a...

متن کامل

Quadrupole Nutation NMR in Solids *

The nutation frequency of a quadrupolar spin I depends on the quadrupole interaction. From nutation spectra, therefore, one obtains information about the direct surrounding of the atom. The theory of the straightforward and of more complicated nutation N M R experiments is outlined. Two applications of nutation N M R , to 2 3 Na in zeolites and A1 in alumina, are shown. In this way in CaO • 6 A...

متن کامل

An analysis of celestial pole offset observations in the free core nutation frequency band

In this study, three empirical Free Core Nutation (FCN) models developed to the present time, MHB2000, Malkin’s and Lambert’s ones, are compared on the basis of representation of variations of the FCN amplitude and phase predicted by these models. It is possible to conclude, that the model of the author provides the most realistic representation of the FCN variations. However, the specified mod...

متن کامل

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Highlights of Astronomy

سال: 1995

ISSN: 1539-2996

DOI: 10.1017/s1539299600011060