Method and device for judging satellite visibility under carrier rotating condition
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A technology of satellite position and carrier, applied in the field of communication
Active Publication Date: 2012-07-18
华力智芯(成都)集成电路有限公司
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[0003] In the prior art, there is no method for effectively judging the visibility of satellites when the carrier is rotating
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Embodiment 1
[0016] In the embodiment of the present invention, the carrier coordinate system is established, and the position of the satellite in the horizontal coordinate system is converted to the carrier coordinate system, thereby calculating the satellite elevation angle, and judging the satellite visibility according to the satellite elevation angle.
[0017] The processing flow of the method for judging satellite visibility under the condition of carrier rotation provided by this embodiment is as follows: figure 1 As shown, the following processing steps are included:
[0018] Step 11, establishing a carrier coordinate system.
[0019] The high-speed rotation of the carrier in space will cause the carrier to block the receiving antenna, resulting in changes in the visibility of the satellite. While the carrier is rotating, the Doppler and signal power of the carrier's received signal will also change.
[0020] The origin O of the carrier coordinate system established in the embodim...
Embodiment 2
[0033] This embodiment provides a device for judging satellite visibility under the condition of carrier rotation, and its specific structure is as follows figure 2 As shown, the following modules are included:
[0034] The satellite position acquisition module 21 is used to establish the carrier coordinate system, calculate the carrier rotation angle, and calculate the satellite position under the carrier coordinate system according to the carrier rotation angle;
[0035] The satellite visibility judging module 22 is used to calculate the satellite elevation angle according to the satellite position in the carrier coordinate system, compare the satellite elevation angle with the set satellite shielding angle, and judge the satellite visibility according to the comparison result.
[0036] Specifically, the satellite position acquisition module 21 may include:
[0037] The carrier rotation angle calculation module 211 is used to establish a carrier coordinate system. The orig...
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Abstract
The invention relates to a method and a device for judging satellite visibility under carrier rotating condition. The method mainly includes: building a carrier coordinate system, calculating carrier rotating angles, and calculating satellite positions in the carrier coordinate system according to the carrier rotating angles; and calculating satellite elevation angles according to the satellite positions in the carrier coordinate system, comparing the satellite elevation angles and satellite screening angles, and judging satellite visibility according to comparison results. In an embodiment of the method and the device, the carrier coordinate system is built, positions of satellites in a horizontal coordinate system are shifted into the carrier coordinate system and the satellite elevation angles are calculated, and accordingly the satellite visibility can be effectively judged according to the satellite elevation angles under carrier rotating condition.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for judging satellite visibility under the condition of carrier rotation. Background technique [0002] Following the GPS (Global Positioning System, Global Positioning System), countries are committed to developing their own satellite navigation systems. On the basis of the Beidou first-generation satellite navigation system, my country has created a new situation for the Beidou-2 satellite navigation system and achieved a stage. sexual outcomes. However, the development of Beidou satellite navigation system is facing many challenges. In order to carry out the research on Beidou guidance technology, the equipment of the rotating system also performs high-speed rotating motion while flying at high speed, resulting in rapid changes in the number of visible stars, the amplitude of the received satellite navigation signal, Doppler, and carrier phase of the...
Claims
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