Study On Data Transmission In LAN And Distortion Measuring In Distribution Strap Down AHRS

The distribution strapdown AHRS and the distortion measuring technology is an important national defense research contents that is prepared toresearch. In the paper,I want to do two part of conatentses: tansfering the value of attitude reference of the warship deck fleetly and accurately to the navigate maiframe with LAN,computing each of the attitude reference information in the deck controling district with spline function and simulating displaying the deck distortion.First, synopsize inertial navigation system and LAN; embody the TCP/IP reference model and its work principle, IP and TCP are taken as the focus. For the sake of thorough comprehension TCP/IP and compiling the application programming according to TCP/IP, study the design way of thinking of the protocol stack and the realization of the relevant protocols in the TCP/IP stack.Set up the network according to TCP/ IP between DOS and Windows. Drive the UMC UM9008 Ethernet Card, set the network, elect the protocol, move to establish IP address netmask gateway, examine the network finally whether the conjunction is normal.Then I compile the socket application programming according to TCP/IP in order to transmit data at the foundation of that the network is normal connected.Finally, simulate and display the deck distortion, draw a true curved face and the matched curved face respectively in Matlab, compute its errors margin of size; Proceed to match the curved face under one demension flection and two demension flection, make the accuracy analyzes;Reckon the value of attitude reference with spline function.