A vehicle-mounted dual-antenna satellite orientation instrument azimuth transmission device and method
A satellite orientation instrument and transmission device technology, applied in the field of satellite orientation, can solve the problems of limiting the use of dual-antenna satellite orientation instruments, installation errors, and reducing measurement accuracy, and achieve high orientation accuracy, good reliability, and obvious anti-interference Effect
Active Publication Date: 2017-05-10
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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Problems solved by technology
This approach limits the distance between the two antennas (baseline length), which reduces measurement accuracy
If it is not fixed on the rigid body, it will bring different degrees of installation error during each installation process, which limits the use of the dual-antenna satellite orientation instrument
Method used
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[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] figure 1 The vehicle-mounted dual-antenna satellite orientation device shown in , includes the main antenna base 1, the measuring device fixing clip 2, the optical measuring device 3, the main navigation satellite antenna 4, the prism adapter 5, the rectangular prism 6, the secondary antenna leveling base Seat 7, optical target 8, auxiliary navigation satellite antenna 9, system power supply 13, main receiver 11, auxiliary receiver 12 and computer 10, main leveling base 14, leveling stud 15.
[0033] In this embodiment, the main navigation satellite antenna 4 and the auxiliary navigation satellite antenna 9 have the same structure.
[0034] Wherein, the optical measuring device fixing clip 2 fixes the optical measuring device 3 on the main antenna base 1, the main navigation satellite antenna 4 is fixed on the top of the measu...
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The invention discloses a vehicle double antenna satellite direction finder azimuth transmission apparatus, mainly comprising a master antenna substrate, a master navigational satellite antenna, a rectangular prism, a subsidiary antenna leveling substrate, an optical target, an auxiliary navigation satellite antenna, a main receiver, an auxiliary receiver and a computer. The invention also provide an orientation method based on the apparatus, concretely comprising: measuring a fixed deviation angle Psi 1 between the prism and the optical axis of an optical measurement device; the optical measurement device imaging the optical target in real time, extracting the position variation dx of current imaging and initial imaging in a direction perpendicular with directions of two satellite antennas, and furthermore obtaining an error angle Psi 2 through conversion; the main receiver combining with the positions of the master navigational satellite antenna and the auxiliary navigation satellite antenna to calculate a satellite antenna measurement angle Psi 3; and the computer calculating the azimuth of a azimuth prism: Psi= Psi 3 + Psi 2- Psi 1. According to the invention, the master navigational satellite antenna and the auxiliary navigation satellite antenna are installed on different substrates, and main errors are compensated, thereby easily prolonging a baseline length to meet measurement precision requirements.
Description
technical field [0001] The invention relates to the technical field of satellite orientation, in particular to an azimuth transmission device and method for a vehicle-mounted dual-antenna satellite orientation instrument. Background technique [0002] The satellite orientation instrument has the advantages of small size, light weight, low price, etc., and is not affected by the magnetic field environment, and has no inertial drift. It has been widely used in the field of orientation. [0003] During the use of the vehicle-mounted dual-antenna satellite orientation instrument, the transmission of the azimuth angle of the vehicle-mounted dual-antenna satellite orientation instrument becomes a key factor affecting the reliability of the vehicle-mounted dual-antenna satellite orientation instrument. Usually, two antennas and rectangular prisms are fixedly connected to the same rigid body, and then installed on the vehicle. This approach limits the distance between the two ante...
Claims
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IPC IPC(8): G01S3/14G01C1/00
CPCG01C1/00G01S3/14
Inventor 陆俊清刘欢高博沈小龙
Owner THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD