Rapid satellite locking method of portable satellite receiver

Abstract

The invention discloses a rapid satellite locking method of a portable satellite receiver. Coarse tuning contains the following steps: position of the receiver is determined; a satellite which is expected to be locked is selected; pitch angle, azimuth angle and polarization angle of the satellite relative to the receiver are calculated; and angle of the receiver is adjusted manually. Fine tuning contains the following steps: a downlink beacon signal of the satellite is received and satellite signal power within adjustable bandwidth is calculated; signal maximum power point is obtained; pitch angle and azimuth angle of the receiver are finely-tuned so as to be directed at the maximum power point; and polarization angle is finely-tuned and the maximum power point is observed, and the polarization angle which maximizes power is selected. An interface of a visualized terminal displays signal intensity within bandwidth during the fine-tuning process at real time and visually shows whether the result of the fine-tuning operation is accurate. The fine-tuning operation is convenient and fast. The downlink beacon signal of the satellite is received so as to realize measurement of the signal intensity. It is not necessary to transmit signals by antennas. The influence of adjacent satellite interference can be avoided effectively. Accuracy of satellite signal intensity measurement is higher.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method for quickly locking a satellite by a portable satellite receiver. Background technique [0002] Satellite communication has three-dimensional seamless coverage capabilities, unique and flexible universal service capabilities, mobility of coverage areas, wide-area complex network formation capabilities, wide-area Internet interactive connection capabilities, and unique wide-area broadcast and multicast capabilities. For a variety of services, it has been more and more widely used in the fields of military communication, mobile communication, emergency communication and radio and television. [0003] So far, satellite ground stations with various business capabilities and various prices have appeared to meet the application requirements of different scenarios. Some places that cars can't reach can't be used. The portable satellite receiver is a kind of sa...

AI Technical Summary

Problems solved by technology

The traditional satellite search method and device have the following problems: (1) The mechanized design is used to realize the regional spiral scanning of the airspace, the structure is relatively complicated, and the design cost is high; (2) The azimuth and pitch of the receiving antenna reflective surface are preset by manual table lookup Angle, the manual workload is large, the degree of intelligence is low, and the accuracy of angle calculation is not high enough; (3) only the pitch angle and azimuth angle are considered in the process of locking the satellite, and the polarization angle of the receiver antenna is not considered, so the polar angle cannot be guaranteed. If the vibrator is adjusted to the same direction as the electromagnetic wave, it is prone to polarization interference, which directly affects the accuracy of the star alignment, thereby affecting the satellite signal reception effect

The satellite alignment method has the following problems: (1) In the process of measuring the satellite signal strength, the satellite alignment method needs to use two bandwidths, and there is a limitation on the number of bandwidths; (2) In the measurement process of the satellite signal strength: firstly, the The antenna sends a radio frequency signal, and then receives the radio frequency signal transmitted by the satellite

Since the receiver antenna is only roughly adjusted during the signal strength measurement and is not completely aligned with the satellite, the angle deviation will cause near-satellite interference when transmitting signals to the satellite, which directly affects the measurement accuracy of the satellite signal strength

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