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Performance Analysis of Integrated Navigation System INS/GPS/Mag. /Baro

تحليل أداء نظام ملاحة تكاملي INS/GPS/MAG./BARO.

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 Publication date 2015
and research's language is العربية
 Created by Shamra Editor




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This article reviews the structure of an integrated navigation system made up of unit inertial sensors manufactured by MEMS technology, a GPS Receiver unit, magnetic compasses manufactured by MEMS technology, and a high barometric sensor. The integrated system is built using an Extended Kalman Filter (EKF). This reviewing is performed with the use of a closed-loop system that has simple integration namely the Loosely Coupling Integration. After conducting several air tests to collect real navigational data, antipersonnel navigational data has been used to do the integrated navigation system analysis with EKF environment in the software Matlab. It has been noticed after the analysis that the complementary horizontal navigation system error does not exceed 50 m. With deliberate withholding of GPS data for different periods in order to test the performance of the integrated navigation system in case of withholding the GPS signal, we have found that the integrated navigation system achieves good accuracy, where the horizontal error does not exceed 200 m value when the withholding GPS data for 120 seconds. This can be considered as small and acceptable values compared with the horizontal error value for inertial navigation unit stim300 when operating independently of up to 8200 m.


Artificial intelligence review:
Research summary
تناقش هذه الورقة البحثية بنية نظام ملاحة تكاملي يتكون من وحدة حساسات عطالية مصنعة بتقنية MEMS، ومستقبل GPS، ووحدة بوصلات مغناطيسية، وحساس ارتفاع بارومتري. تم بناء النظام باستخدام مرشح كالمان الموسع (EKF) وتم تطبيق نظام الحلقة المغلقة ذات التكامل البسيط. أُجريت تجارب جوية لجمع المعطيات الملاحية الحقيقية، وتم تحليل أداء النظام باستخدام بيئة Matlab. أظهرت النتائج أن نظام الملاحة التكاملي يحقق دقة جيدة، حيث لم تتعد قيمة الخطأ الأفقي 50 مترًا في الظروف العادية و200 مترًا عند حجب معطيات GPS لمدة 120 ثانية، مقارنةً بخطأ يصل إلى 8200 متر عند استخدام وحدة الملاحة العطالية بشكل مستقل. تم اختبار النظام في حالات مختلفة من حجب معطيات GPS وأظهرت النتائج أن النظام يمكنه العمل بدقة جيدة حتى في غياب إشارة GPS لفترات محددة.
Critical review
دراسة نقدية: على الرغم من أن الورقة تقدم تحليلًا شاملاً ودقيقًا لأداء نظام الملاحة التكاملي، إلا أنه يمكن ملاحظة بعض النقاط التي قد تحتاج إلى تحسين. أولاً، لم يتم التطرق بشكل كافٍ إلى تأثير العوامل البيئية المختلفة مثل التداخلات الكهرومغناطيسية أو الظروف الجوية القاسية على أداء النظام. ثانيًا، قد يكون من المفيد تضمين مقارنة مع أنظمة ملاحة تكاملية أخرى لتوضيح مدى تفوق النظام المقترح. أخيرًا، يُفضل توضيح المزيد من التفاصيل حول كيفية تحسين دقة النظام في حالات حجب معطيات GPS لفترات أطول من 120 ثانية.
Questions related to the research
  1. ما هي مكونات نظام الملاحة التكاملي الذي تم دراسته في الورقة؟

    يتكون نظام الملاحة التكاملي من وحدة حساسات عطالية مصنعة بتقنية MEMS، ومستقبل GPS، ووحدة بوصلات مغناطيسية، وحساس ارتفاع بارومتري.

  2. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي من البحث هو تحليل أداء نظام الملاحة التكاملي وتحديد دقته في وجود وغياب معطيات GPS.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت الدراسة أن نظام الملاحة التكاملي يحقق دقة جيدة، حيث لم تتعد قيمة الخطأ الأفقي 50 مترًا في الظروف العادية و200 مترًا عند حجب معطيات GPS لمدة 120 ثانية.

  4. ما هي التوصيات التي قدمتها الدراسة لتحسين أداء نظام الملاحة التكاملي؟

    أوصت الدراسة بضرورة استخدام نظام الملاحة التكاملي لتصحيح أخطاء وحدة الملاحة العطالية، وأكدت على أهمية النظام في حالات غياب إشارة GPS، خاصة في المناطق التي تفتقر إلى تغطية جيدة.


References used
Stephen Beeby, Graham Ensell, Michael Kraft and Neil White, 2004, "MEMS Mechanical Sensors", Artech House, Inc.Boston London
D. H. Titterton and J. L. Weston, 2004. "Strapdown Inertial Navigation Technology Second Edition", The Institution of Electrical Engineers
Paul D. Groves, 2008, "Principles of GNSS, Inertial, and Multisensor Integrated Navigation Systems" ARTECH HOUDE BOSTON/LONDON
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