Real-time GNSS/INS (global navigation satellite system/inertial navigation system) combined navigation signal simulator based on PXI (PCI extensions for instrumentation) bus

A signal simulator and integrated navigation technology, applied in the field of navigation, can solve the problems of insufficient adaptability, lack of user equipment test system, lack of top-level design experience, etc.

Active Publication Date: 2015-06-24
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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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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  • Real-time GNSS/INS (global navigation satellite system/inertial navigation system) combined navigation signal simulator based on PXI (PCI extensions for instrumentation) bus
  • Real-time GNSS/INS (global navigation satellite system/inertial navigation system) combined navigation signal simulator based on PXI (PCI extensions for instrumentation) bus
  • Real-time GNSS/INS (global navigation satellite system/inertial navigation system) combined navigation signal simulator based on PXI (PCI extensions for instrumentation) bus

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Embodiment Construction

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

[0024] The navigation real-time GNSS / INS combined navigation signal simulator of the present invention comprises PXI zero slot controller 1, rubidium clock 2, time-frequency signal processing unit 3, PXI bus 4 and user signal generating unit 5, wherein, user signal generating unit 5 is composed of The user 1 to user N signal generating units 5-1 to 5-N are composed, each signal generating unit has the same structure, and its quantity is determined according to the number of users required, and there are several signal generating units for several users. figure 1 It is an electric principle block diagram of the present invention, and the embodiment is according to figure 1wiring. The PXI zero-slot controller 1 generates digital information and sends it to the PXI bus 4 , and obtains the status information reported by the user signal generating...

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Abstract

The invention discloses a real-time GNSS/INS (global navigation satellite system/inertial navigation system) combined navigation signal simulator based on a PXI (PCI extensions for instrumentation) bus and relates to a real-time GNSS/INS combined navigation signal simulator in the navigation field. The simulator comprises a time-frequency signal processing unit, a user signal generating unit, the PXI bus, a PXI slot-0 controller, a rubidium clock and the like; the user signal generating unit is composed of multiple frequency-point signal generating modules, a radiofrequency signal combiner, a power divider, a power attenuator and the like. The PXI bus technique is used in system structuring, configurability and extensibility are excellent, the simulator is imparted multi-navigation system multi-frequency GNSS/INS navigation signal simulation capacity by selecting parts, especially the multi-user GNSS/INS combined negation signal simulation output capacity, and the need of the navigation field for real-time testing of GNSS, INS and GNSS/INS combined navigation signals is fully met.

Description

technical field [0001] The present invention relates to the field of navigation, in particular to a real-time GNSS (Global Navigation Satellite System, Global Navigation Satellite System) / INS (Inertial Navigation System, inertial navigation system) integrated navigation signal simulator based on a PXI (PCI Extensions for Instrumentation) bus , It is especially suitable for providing GNSS signals, INS signals, and GNSS / INS integrated navigation signals for the test of navigation equipment in the field of navigation. 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 lacks improvements in future navigation test tasks, test object improvements, system upgrades, etc. As a result, the system can only support limited test and evaluation tasks within a specific period of time, lacks adaptability, lacks a...

Claims

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Application Information

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Patent Type & Authority Applications(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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