Airborne ultra-short wave interference cancellation system
A technology of interference cancellation and ultra-short wave, which is applied in the field of aircraft avionics, can solve problems such as electromagnetic interference in the same frequency band, and achieve the effect of improving the technical level of electromagnetic compatibility, wide application prospects, and improving communication efficiency
Inactive Publication Date: 2019-09-20
SHAANXI AIRCRAFT CORPORATION
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Problems solved by technology
[0006] The present invention better solves the existing airborne ultrashort wave communication system in a strong electromagnetic interference environment, and effectively improves the electromagnetic interference problem in the same frequency band that cannot be solved by filters, and effectively improves the ultrashort wave communication equipment in the same frequency band strong electromagnetic interference environment. communication efficiency
Method used
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[0019] The present invention is described in detail as follows in conjunction with the accompanying drawings and specific embodiments:
[0020] The present invention samples and analyzes the high-power interference signal in the ultrashort wave frequency band by adding a canceling antenna, a canceller, a calibration controller and a cross-linking cable in the ultrashort wave communication system, and generates the same frequency and amplitude as the interference signal received by the ultrashort wave antenna , phase-opposite cancellation signals, after the two cancel each other, provide a very "clean" receiving and processing environment for the ultrashort wave communication receiver, thereby ensuring the reception and processing of useful signals, and realizing the ultrashort wave conventional mode communication in a strong single-antenna electromagnetic interference environment unimpeded. The specific technical scheme is as follows:
[0021] Combined with the strong electro...
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The invention belongs to the technical field of aircraft avionics, in particular to an airborne ultra-short wave interference cancellation system. The system is composed of a cancellation antenna, a canceller, a calibration controller, an airborne ultra-short wave communication antenna, an interference antenna, interference equipment and airborne ultra-short wave communication equipment, wherein the offset antennas are arranged on the left side and the right side of the aircraft back fin, the canceller and the calibration controller are installed inside an aircraft, the canceller is crosslinked with the cancelling antenna through the crosslinking cable to realize extraction of interference signals of aircraft interference equipment, and the canceller is crosslinked with the airborne ultra-short wave communication antenna through the crosslinking cable to realize receiving and transmitting of ultra-short wave communication modulation signals; and after calibration, the canceller adaptively generates an ultra-short wave cancelling signal according to the received information, so that the interference signal is comprehensively cancelled. The system provided by the invention greatly solves the problem of communication connection of the airplane in an electromagnetic interference environment.
Description
technical field [0001] The invention belongs to the technical field of aircraft avionics, and in particular relates to an airborne ultrashort wave interference cancellation system, which is mainly used to realize that airborne ultrashort wave communication equipment can still maintain smooth communication at a certain distance in a strong electromagnetic interference environment. Background technique [0002] In the environment of strong electromagnetic ring radiation, the existing airborne communication system often annihilates the useful signal due to the high intensity of the interference signal received by the high-sensitivity receiver. In severe cases, the receiver is blocked, and effective radio communication cannot be completed at all. Although the method of adding a filter has a certain suppression effect on out-of-band signals to a certain extent, it has no effective suppression effect on in-band interference signals, and still cannot solve the same-frequency interfe...
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Login to View More IPC IPC(8): H04L25/03H04B1/40H04B1/10
CPCH04B1/10H04B1/1036H04B1/40H04L25/03159
Inventor 高小红邓爱国王恒贾晓斌冯卉萱惠玖义张国华吴云忠张强
Owner SHAANXI AIRCRAFT CORPORATION