近幾年來，微機電技術應於在導航系統上，使得其外型輕薄短小，且價格也便宜許多。 本研究的主要目的在於探討微機電慣性導航系統的誤差特性，並尋找出一個簡單但有效的方法來改善它的精度。本研究之系統主要著重在於二維平面的運輸應用。
　　經由靜態實驗結果顯示，將INS靜置二分鐘後， 其位移誤差高達一百公尺以上，且速度與角度誤差呈線性趨勢。若使用線性修正模組，則四分鐘後的位移誤差可降低至公尺級，而角度誤差則為一度左右。在動態實驗中，本研究探討移動平面的摩擦力對INS軌跡精度的影響。 由實驗結果得知，光滑平面可提供較小的移動阻力，使INS呈現較高的軌跡精度。
　　本研究使用GPS與IPS來提供導航資訊，以輔助INS改善軌跡精度。其中GPS可提供戶外使用，而IPS可於室內使用， 且均能提供穩定的絕對位置資訊。經由靜態實驗結果顯示，定位系統的二維平面位置精度可達三公分以內。在動態實驗方面，透過GPS/INS與IPS/INS的系統整合， 則平面導航的精度可達公分級以內。

　　In recentyears,MEMS(Micro-Electro-Mechanical System) has been applied to navigation systems so that the cost and size of a new system are reduced. The main purpose of this study is to investigate the error behavior of a MEMS INS(Inertial Navigation System) system and to search a simple but effective method to improve the accuracy. The studied system is focused on 2D condition which can be applied to plan transportation.

　　Static tests show that the error of the investigated INS system can be as high as over one hundred meters after two minutes. Both velocity and angle show an error in linear trend. If a linear correction model is applied, the final displacement error is reduced to be in several meters while the angle error is around one degree after four minutes. The effect of ground surface roughness was also studied through dynamic tests. As a result, a smooth surface provides less resistance and higher accuracy.

　　Two navigation aids of GPS(Global Positioning System) and IPS(Indoor Positioning System) were used to improve the INS positioning solutions. GPS is intended for outdoor application while IPS is for indoor application. Both systems are capable of providing steady absolute position information. Static test show that the 2D position accuracy from these two systems is within three centimeters. The dynamic tests from the GPS/INS and IPS/INS indicate that the combined systems have a potential in reaching a plan navigation accuracy of centimeter level.

[1] http://www.gpsworld.com
[2] http://www.trimble.com
[3] Thomas J. Fitzgerald, ”Where Are You? The Tracking System Knows”, The
New Times, October 30, 2003.
[4] Michale R McCaryth, Henk L Muller, “RF Free Ultrasonic Positioning”, Se-
venth IEEE International Symposium on Wearable Computers, pages79—85.
IEEE Computer Society, October 2003.
[5] Yasuhiro FUKUJU, Masateru MINAMI, Hiroyuki MORIKAWA, and Tomo-
nori AOYAMA, “DOLPHIN: An Autonomous Indoor Positioning System in
Ubiquitous Computing Environment.” In Proceedings of IEEE Workshop on
Software Technologies for Future Embedded Systems(WSTFES2003), pp.53
-56, Hakodate, Japan, May 2003.
[6] Nissanka B. Priyantha, Allen KL Miu, Hari Balakrishnan, and Seth Teller, ”
The Cricket Compass for Context-Aware Mobile Applications”, Proc. of the
6th ACM MOBICOM Conf., Rome, Italy, July 2001.
[7] Allen Ka Lun Miu, “Design and Implementation of an Indoor Mobile Navig-
ation System”, Massachusetts Institute of Technology, Jan 2002.
[8] K.P.Schwarz, 宋真坦，余水倍，鄧元正（1990），全球定位系統與慣性導
航研討會專集，中正理工學院。
[9] Dougherty, J.J, El-Sherief, H. and Hohman, D.S., “Use of The Global Positi-
oning System for Evaluating Inertia Measurement Unit Error”, Journal of G-
uidance, Control, and Dynamics, Vol.17, No.3, May-June 1994.
[10] Salah Sukkarieh, Eduardo M. Nebot, and Hugh F. Durrant-Whyte, “A High
Integrity IMU/GPS Navigation Loop for Autonomous Land Vehicle Appli-
cations“, IEEE Trans. Robot. Automation., vol 15, no 3, Jun-99 pp 572-578
June 1999.
[11] Shannon Cheng, “SPHERES Metrology”, Proc. SPIE 4449, 281-290 (2001).
[12] David Miller, Dava Newman, Javier de Luis, “Synchronized Position,Hold,
Engage,and Reorient Experimental Satellites(SPHERES) Test Equipment
Data Package”, 23 March 2000.
[13] 王啟宏(1994)，地面導航系統互補性方法之研究，碩士論文，國立成功大學航空太空工
程研究所，台南。
[14] 蔣宏仁(1997)，DGPS輔助慣性導航分散式濾波之設計及驗證，碩士論
文，國立成功大學航空太空工程研究所，台南。
[15] 盧沛澐(1997)，單軸慣性導航系統之建立與測試，碩士論文，國立成功大學航空太空工
程研究所，台南。
[16] 曾庭鴻(2002)，利用GPS鑑別加速儀的速度誤差模式，碩士論文，國立成功大學航空太
空工程研究所，台南。
[17] 田春林，陳治鑑，何慶雄（1996），批次濾波於利用GPS量測值以估測IMU誤差常數之初
步研究，第二屆GPS衛星定位技術研討會論文集，中正理工學院。