DETERMINATION AND GEOPHYSICAL INTERPRETATION OF THE ORBIT OF CHINA 2 ROCKET (1971-18B)

被引:16
作者
HILLER, H
机构
[1] Royal Aircraft Establishment, Farnborough, Hants England
关键词
D O I
10.1016/0032-0633(79)90104-1
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The orbit of China 2 rocket, 1971-18B, has been determined at 114 epochs throughout its 5-yr life, using the RAE orbit refinement program PROP 6, with more than 7000 radar and optical observations from 83 stations. The rocket passed slowly enough through the resonances 14:1, 29:2, 15:1 and 31:2 to allow lumped geopotential harmonic coefficients to be calculated for each resonance, by least-squares fittings of theoretical curves to the perturbation-free values of inclination and eccentricity. These lumped coefficients can be combined with values from satellites at other inclinations, to obtain individual harmonic coefficients. The rotation rate of the upper atmosphere, at heights near 300 km, was estimated from the decrease in orbital inclination, and values of 1.15, 1.05, 1.10 and 1.05 rev/day were obtained between April 1971 and January 1976. From the variation in perigee height, 25 values of density scale height were calculated, from April 1971 to decay. Comparison with values from the COSPAR International Reference Atmosphere 1972 shows good agreement between April 1971 and October 1975, but the observational values are 10% lower, on average, than CIRA thereafter. A further 1400 observations, made during the final 15 days before decay, were used to determine 15 daily orbits. Analysis of these orbits reveals a very strong West-to-East wind, of 240 ± 40 ms-1, at a mean height of 195 km under winter evening conditions, and gives daily values of density scale height in the last 7 days before decay. © 1979.
引用
收藏
页码:1247 / 1267
页数:21
相关论文
共 20 条
[1]   SATELLITE RESONANCE WITH LONGITUDE-DEPENDENT GRAVITY .3. INCLINATION CHANGES FOR CLOSE SATELLITES [J].
ALLAN, RR .
PLANETARY AND SPACE SCIENCE, 1973, 21 (02) :205-225
[2]   AIR DENSITY AT HEIGHTS NEAR 300KM, FROM ANALYSIS OF ORBIT OF CHINA-2 ROCKET (1971-18B) [J].
BROOKES, CJ ;
RYLAND, FCE .
PLANETARY AND SPACE SCIENCE, 1977, 25 (11) :1011-1020
[3]   IONOSPHERIC MODEL EFFECTS ON THERMOSPHERIC CALCULATIONS [J].
CHING, BK ;
STRAUS, JM .
JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS, 1977, 39 (11-1) :1389-1393
[4]  
Cook G. E., 1973, Celestial Mechanics, V7, P301, DOI 10.1007/BF01227851
[5]  
GOODING RH, 1971, RAE71068 TECH REPT
[6]  
GOODING RH, 1968, RAE68299 TECH REPT
[7]  
GOODING RH, UNPUBLISHED
[8]  
Jacchia L.G., 1971, REVISED STATIC MODEL
[9]  
King-Hele D. G, 1964, THEORY SATELLITE ORB
[10]   EVALUATION OF 14TH-ORDER HARMONICS IN THE GEOPOTENTIAL [J].
KINGHELE, DG ;
WALKER, DMC ;
GOODING, RH .
PLANETARY AND SPACE SCIENCE, 1979, 27 (01) :1-18