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Integrated combined navigation computer based on double DSP

An integrated navigation and computer technology, applied in integrated navigators, navigation calculation tools, computer security devices, etc., can solve the large amount of data processing and real-time requirements in the field of high-precision integrated navigation, poor versatility of navigation computers, and no consideration of time synchronization, etc. problem, to achieve the effect of flexible and convenient debugging, low power consumption and good versatility

Active Publication Date: 2008-12-10
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

However, this scheme generally does not consider time synchronization, so the navigation accuracy is low
Although some also use hardware synchronization for data synchronization, hardware synchronization requires an additional control circuit that controls the sampling time of the inertial measurement unit. Different inertial measurement units require different control circuits, so the combined navigation of hardware synchronization is adopted. poor computer versatility
Therefore, the existing integrated navigation computer based on the embedded system is not suitable for the field of high-precision integrated navigation with a large amount of data processing and very strict real-time requirements.

Method used

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  • Integrated combined navigation computer based on double DSP
  • Integrated combined navigation computer based on double DSP
  • Integrated combined navigation computer based on double DSP

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Embodiment Construction

[0021] like figure 1 As shown, the present invention comprises input interface module 1, DSP1 module 2, DSP2 module 3 and output interface module 4, input interface module 1 is connected with DSP1 module 2, DSP1 module 2 is connected with DSP2 module 3 through parallel host interface, DSP2 module 3 is connected with the output interface module 4.

[0022] System workflow such as image 3 As shown, DSP1 module 2 receives IMU data, IMU synchronization pulse, GPS data and GPS second pulse through input interface module 1, completes preprocessing and time synchronization of IMU data and GPS data, and synchronizes Data is transferred to DSP2 module 3 through the parallel host interface. The DSP2 module 3 receives the time-synchronized IMU data and performs strapdown calculation. When the preprocessed GPS data is received, combined filtering and feedback correction are performed. The navigation result is output by the serial port 1 of the output interface module 4.

[0023] Th...

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Abstract

The integrated combined navigation computer based on double DSP is used in combined navigation system with inertial measurement unit and GPS combination. It includes an input interface module, a DSP1 module, a DSP2 module and an input interface module mainly. The DSP1 module completes the pre-treatment of sensor data and the time sync to ensure the precise sync of data in the combined point; and the DSP2 module completes the strapdown resolving and combined filtering. Two DSP modules communicate through the system unit interface in high speed without interrupting the operation in the DSP2 module, so as to ensure the real-time performance and navigation resolving precision of the system. The present invention realizes the integrated design of double DSP combined navigation computer, and the double DSP combined navigation computer has reduced power consumption, size and weight and raised performance.

Description

technical field [0001] The invention relates to an integrated combined navigation computer based on dual DSPs, which belongs to the field of combined navigation and is used for combined navigation systems combined with inertial and global satellite positioning systems (GPS), and is especially suitable for those with strict requirements on volume, power consumption and performance. Inertial Measurement Unit (IMU) / GPS Integrated Navigation System. Background technique [0002] With the development of science and technology, there are currently various navigation systems suitable for navigation carriers, each of which has its own advantages and characteristics, but also has inherent shortcomings. Combining several navigation systems installed on the carrier (such as the combination of inertial navigation system and GPS) to form a combined navigation system, learn from each other's strengths, and comprehensively play the characteristics of various navigation systems, will be abl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/20G01C21/26G01C21/24G01C21/28G01C21/16G01S1/02G01S5/02G06F13/38G06F21/00G01S19/39
CPCY02D10/00
Inventor 房建成杨胜刘百奇张钰全伟徐帆
Owner BEIHANG UNIV
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