1 Determining the oblateness is extremely difficult.

2 The effects of air drag and oblateness of the earth on relative orbit were derived by simulations under different conditions.

3 The oblateness in each time can be calculated according to the conjectured change of the radius, the quality and the angular velocity.

4 The oblateness tends to decrease since the formation of the earth.

5 The change of oblateness in individual geological periods is needed to determine the change of the earth's shape.

6 Titan's oblateness may also help explain why its methane lakes are concentrated near the poles.

7 Taking the earth rotation and oblateness into consideration, the orbit perturbation, attitude errors and its stability effects on SAR Doppler parameters are analyzed.

8 The degree of this oblateness is small, the researchers report in a paper published online by Science. It's also not surprising, Dr.

9 The changes of optimal trajectory caused by Earth's oblateness are computed.

10 By using the nonlinear programming theory, a optimal impulse satellite evasive trajectory planning model considering earth oblateness perturbation had been established.

11 Accuracy of the measurements of the geocentric vector is affected by earth oblateness.

12 The result suggests that the oceanic mass redistribution can partly explain the abnormal variation of the Earth's oblateness from 1998.

13 The first part is to analyze the two error sources of the earth horizon sensor: one is earth oblateness and the other is non-uniformly distributed atmospheric infrared radiation.

14 The earth is a ellipsoid consisted of both solid and liquid, so the true value in each geological time should be less than the calculated oblateness.

15 Solar physicists have known about supergranules and the magnetic network they produce for many years, but only now has RHESSI revealed their unexpected connection to the sun's oblateness .

16 The reason of attitude correction of scanning infrared horizon sensor is presented by reason of Earth's oblateness and infrared radiation.

17 Simple form unretarted orbit of space vehicles under the first order perturbation of the oblateness of the earth is obtained in this paper.

18 When solving required velocity, It real-timely thinks about influence of oblateness of the earth and gives the process of solving required velocity by midcourse trajectory method.

19 In this paper, we discuss the effect of the Earth's oblateness and ionosphere on the retrieval, and analyze the result of the local curvature correction and the ionosphere calibration.