A method of obtaining laser inertial group north-seeking navigation big data
A technology of navigation data and laser inertial group, which is applied in the field of laser inertial group, can solve the problems of incomplete and reliable data acquisition and high cost, so as to improve accuracy and reliability, overcome the mismatch of data flow attribute parameters, and ensure accuracy and reliability effects
Active Publication Date: 2020-06-19
BEIJING INST OF SPACE LAUNCH TECH +1
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[0005] In order to solve the problems that the existing methods for acquiring laser inertial group north-seeking navigation big data cannot obtain complete and reliable data and consume a lot of manpower and material resources in the acquisition process, the present invention innovatively proposes a method for obtaining laser inertial group north-seeking navigation big data. The method of data, which effectively reduces the interference of environmental factors, avoids the dependence on personnel operation skills, and thus avoids the problem of repeated data acquisition, greatly reduces the consumption of manpower and material resources, and achieves complete and reliable acquisition of north-seeking navigation The technical purpose of big data
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[0042] The present invention will be explained and described in detail below in conjunction with the accompanying drawings.
[0043] Such as Figure 1-4 As shown, the present invention specifically discloses a method for obtaining big data of laser inertial group north-seeking navigation; in terms of hardware, the present invention adds a large-capacity memory chip on the main control board inside the laser inertial group. In this embodiment, the above-mentioned main control board is a DSP chip, and the large-capacity memory chip is NANDFLASH, wherein, each block in the NANDFLASH has 128 pages, and each page has 8K bytes, and the upper computer and the main control board are connected through Ethernet. connection; the method specifically includes the following steps.
[0044] Step 1: Power on the laser inertial group, wait for the system startup to complete, before the laser inertial group receives the external north-seeking command, read the data stream attribute parameters ...
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The invention discloses a method for obtaining north-seeking navigation big data by a laser inertial measurement unit. The method comprises the following steps: 1) performing north-seeking calculationby the laser inertial measurement unit; 2) preserving the north-seeking data and navigation data generated during a north-seeking calculating process on a newly added memory chip on a main control board; 3) after north-seeking calculation is completed, performing automatic navigation calculation on the main control board; 4) preserving the navigation data generated during a navigation calculatingprocess in the memory chip; 5) stopping the navigation calculation by the main control board and ending the preservation of the navigation data; and 6) obtaining the north-seeking data and / or navigation data preserved in the memory chip through a host computer. The data generated during the north-seeking navigation process by the laser inertial measurement unit is preserved in the newly added memory chip, so that the data can be preserved in a reliable and completed mode; the north-seeking navigation is completed by the laser inertial measurement unit, the big data of the north-seeking navigation is obtained through the host computer, so that the north-seeking navigation big data can be obtained in an accurate and complete mode.
Description
technical field [0001] The present invention relates to the technical field of laser inertial groups, and more specifically, the present invention is a method for obtaining big data of laser inertial group north-seeking navigation. Background technique [0002] At present, in order to analyze the performance of algorithms such as laser inertial group north-seeking navigation, it is necessary to obtain the big data generated by laser inertial group in the process of north-seeking navigation. The conventional acquisition method of laser inertial group north-seeking navigation big data is: use an external mobile collection and storage device to synchronously collect laser inertial group north-seeking navigation big data, and the collection channel generally uses a serial port. In specific implementation, specific mobile collection and storage devices include Portable industrial computer, etc. [0003] Although the conventional acquisition method of laser inertial group north-s...
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IPC IPC(8): G01C21/16G01C21/20G06F3/06
Inventor 陈令刚段祉鸿朱曦曼狄世超刘希强董彦维卫瑞高艳赵琳彭惠
Owner BEIJING INST OF SPACE LAUNCH TECH