Anti-interference method and device for navigation receiver through employing inertial navigation equipment

Abstract

The invention relates to the technical field of electronic information, specifically an anti-interference method and device for a navigation receiver through employing inertial navigation equipment under the condition of cold start. The method comprises the steps: calculating a guide vector between a satellite and an antenna array according to information provided by inertial navigation, adjusting the weight of an array and forming a wave beam, and enabling the wave beam to face the incoming direction of a satellite signal. The method is advantageous in that 1, the method can divide the direction of the wave beam in an adaptive manner; 2, the method controls the direction of the wave beam synthesized by a plurality of antennas through the position information obtained by the inertial navigation equipment, and achieves the effects of improving signal receiving gain, and weakening interference.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a method and device for anti-interference of a navigation receiver using inertial navigation equipment under cold start. Background technique [0002] It is known that the satellite navigation system is a satellite-based radio navigation system that uses artificial satellites as navigation stations. Due to the low power of the signal sent by the satellite navigation system, it faces a complex and harsh channel environment and is susceptible to various forms of intentional or unintentional interference. It leads to the decline of the navigation and positioning performance of the navigation receiver. Therefore, measures must be taken to combat these interferences to ensure the positioning performance of the navigation receiver. [0003] At present, satellite navigation receivers mainly use adaptive airspace or joint space-time filtering, which are mainly divided into...

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Problems solved by technology

However, there are obvious defects in the above two types of schemes: in the first type of scheme, the adaptive processing technology based on nulling only considers interference suppression, and does not take into account the enhancement of satellite signals, so this type of method does not need to predict the direction of satellite signals.

However, in practical applications, since the direction of satellite signals cannot be predicted, the array antenna is usually used to simulate multiple beams, so that each beam points to a different direction divided in advance, so that the synthetic beam can cover the entire upper hemisphere, so that each satellite can be detected. Corresponding beam coverage; therefore, the beam pointing used in the prior art is pre-divided, and the beam pointing cannot be adaptively adjusted according to the satellite signal during actual operation

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