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A real-time GNSS/INS integrated navigation signal simulator for general navigation based on pxi bus

A signal simulator and integrated navigation technology, applied in the field of navigation, can solve problems such as lack of adaptability, lack of improvement, lack of user equipment test system, etc.

Active Publication Date: 2017-09-26
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current domestic testing and evaluation of general aviation user equipment is limited to the use of existing navigation signal simulators (or slightly improved), driven by limited target tasks, and lacks improvements in future navigation test tasks, test object improvements, system upgrades, etc. Due to the targeted design of the system, the system can only support limited test and evaluation tasks within a specific period of time, lacks adaptability, lacks a comprehensive and authoritative user equipment test system, and lacks relevant top-level design experience

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  • A real-time GNSS/INS integrated navigation signal simulator for general navigation based on pxi bus
  • A real-time GNSS/INS integrated navigation signal simulator for general navigation based on pxi bus
  • A real-time GNSS/INS integrated navigation signal simulator for general navigation based on pxi bus

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Embodiment Construction

[0023] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0024] The general aviation real-time GNSS / INS integrated navigation signal simulator of the present invention includes a PXI zero-slot controller 1, a rubidium clock 2, a time-frequency signal processing unit 3, a PXI bus 4 and a user signal generation unit 5. The user signal generation unit 5 is composed of User 1 to User N are composed of signal generating units 5-1 to 5-N. Each signal generating unit has the same structure, and its number is determined according to the number of users required. There are several signal generating units for several users. figure 1 It is a block diagram of the electrical principle of the present invention. figure 1 wiring. The PXI zero slot controller 1 generates digital simulation information and sends it to the PXI bus 4, and obtains the status information reported by the user signal generation unit 5 from the PXI bus 4. Th...

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Abstract

The invention discloses a real-time GNSS / INS combined navigation signal simulator for general navigation based on a PXI bus, which relates to a real-time GNSS / INS combined navigation signal simulator in the field of navigation. It consists of time-frequency signal processing unit, user signal generation unit, PXI bus, PXI zero-slot controller, rubidium clock and other components. Among them, the user signal generation unit is composed of a plurality of frequency point signal generation modules, a radio frequency signal combiner, a power divider, a power attenuator, and the like. The present invention adopts the PXI bus technology for system architecture, and has excellent configurability and scalability. By selecting components, the simulator has the ability to simulate GNSS / INS navigation signals of multiple navigation systems and multi-frequency points, especially with multi-user, The simulation output capability of GNSS / INS integrated navigation signals fully meets the requirements of real-time testing of GNSS, INS, and GNSS / INS integrated navigation signals in the navigation field.

Description

Technical field [0001] The present invention relates to the field of navigation, in particular to a real-time GNSS (Global Navigation Satellite System) / INS (Inertial Navigation System) integrated navigation signal simulator based on PXI (PCI Extensions for Instrumentation) bus. It is especially suitable for providing GNSS signals, INS signals, and GNSS / INS combined navigation signals for navigation equipment testing in the general aviation field. Background technique [0002] The current domestic testing and evaluation of general aviation user equipment is limited to the use of existing navigation signal simulators (or slightly improved), driven by limited target tasks, and lack of improvements in future general aviation test tasks, test object improvements, system upgrades, etc. The targeted design of the system causes the system to only support limited test and evaluation tasks within a specific time period, lacks adaptability, lacks a comprehensive and authoritative user equip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 叶红军蔚保国晁磊董立桥刘莉
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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