A satellite signal transponder system used in a semi-enclosed environment

A satellite signal and forwarding system technology, applied in the field of aviation aircraft satellite positioning, can solve the problems of not effectively eliminating multi-path interference in a semi-enclosed environment, unsuitable for aircraft satellite positioning, and harsh calculation of multi-path satellite signals, so as to reduce multi-path Interference effect, reduce multipath interference, ensure the effect of elimination

CN113219500BActive Publication Date: 2022-04-08CHENGDU AIRCRAFT INDUSTRY GROUP
18 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-04-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention proposes a satellite signal forwarding system used in a semi-enclosed environment, which is connected to the control system of the aircraft and used to perform satellite signal forwarding based on the anti-jamming secondary forwarding technology for the aircraft in the warehouse. The satellite signal The forwarding system includes a receiving antenna outside the warehouse, a signal processor, a transmitting antenna in the warehouse, and a forwarding antenna machine; the receiving antenna outside the warehouse is arranged outside the warehouse for receiving satellite signals transmitted by satellites; the signal processor is arranged in the warehouse , and the input end of the signal processor is connected with the external receiving antenna of the storehouse by the radio frequency cable; The signal processor is provided with a frequency offset module for setting the frequency offset of the input satellite signal; and the frequency offset between the frequency offset module on the repeating antenna machine and the frequency offset module on the signal processor is matched.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of satellite positioning of aviation aircraft, and in particular relates to a satellite signal forwarding system used in a semi-enclosed environment. Background technique

[0002] According to the principle of satellite positioning, the aircraft receives the satellite signals of no less than four satellites through the satellite navigation antenna, and the signal is processed by the receiver to obtain the satellite space coordinates and distance measurement value information; then the pseudo code is copied inside the receiver and copied The code is correlated with the received satellite signal, and finally the code phase is measured according to the peak value of the pseudo-code autocorrelation function, and then the spatial position of the aircraft antenna is obtained, that is, the precise positioning of the aircraft is realized.

[0003] However, when aircraft positioning is performed in a semi-enclosed ha...

Examples

Embodiment 1

[0039] A satellite signal forwarding system used in a semi-enclosed environment, connected to the control system of the aircraft 6, and used to perform satellite signal forwarding based on anti-jamming secondary forwarding technology for the aircraft 6 in the warehouse 5, such as figure 1 As shown, the satellite signal forwarding system includes a receiving antenna 1 outside the library, a signal processor 2, a transmitting antenna 3 in the library, and a forwarding antenna 4;

[0040]The receiving antenna 1 outside the warehouse is arranged outside the warehouse 5, and is used to receive satellite signals transmitted by satellites; The receiving antenna 1 is connected; the output end of the signal processor 2 is connected to the control system of the transmitting antenna 3, the forwarding antenna machine 4 and the aircraft 6 in the storehouse successively;

[0041] The repeating antenna unit 4 and the signal processor 2 are provided with a frequency offset module for setting ...

Embodiment 2

[0044] This embodiment is based on the above-mentioned embodiment 1, in order to better realize the present invention, further, as figure 2 , image 3 As shown, the signal processor 2 includes an A / D module, a signal processing FPGA module, a D / A module, a frequency multiplier, an E 2 ROM module, DSP module, Flash module;

[0045] The input end of the described A / D module of signal processor 2 is connected with receiving antenna 1 outside the described library by radio frequency cable, and output end connects signal processing FPGA module, D / A module successively, and by the output end of D / A module Connect with transmitting antenna 3 in the storehouse;

[0046] The frequency doubler passes the E 2 ROM module is connected with described signal processing FPGA module;

[0047] The DSP module is connected with the signal processing FPGA module, and the Flash module is lapped on the DSP module;

[0048] Further, the signal processing FPGA module includes a first radio frequ...

Embodiment 3

[0055] In this embodiment, on the basis of any one of the foregoing embodiments 1-2, in order to better realize the present invention, further, the forwarding antenna 4 includes an A / D module, a signal processing FPGA module, a D / A module, Multiplier, E 2 ROM module, DSP module, Flash module;

[0056] The input end of the described A / D module of forwarding antenna machine 4 is connected with transmitting antenna 3 in the storehouse, and output end connects signal processing FPGA module, D / A module successively, and by the output end of D / A module and described Control system connection of aircraft 6;

[0057] The frequency doubler passes the E 2 ROM module is connected with described signal processing FPGA module;

[0058] The DSP module is connected to the signal processing FPGA module, and the Flash module is overlapped on the DSP module.

[0059] In order to better realize the present invention, further, the described signal processing FPGA module of repeating antenna m...