Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial Navigation
Knowledge of the propagation of sensor errors in strapdown inertial navigation is crucial for the design of inertial and integrated navigation systems. The propagation of initialization errors and deterministic sensor errors is well covered in the literature. If considered at all, the propagation of...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/23/6914 |
| _version_ | 1797545791397560320 |
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| author | Christopher Blum Johann Dambeck |
| author_facet | Christopher Blum Johann Dambeck |
| author_sort | Christopher Blum |
| collection | DOAJ |
| description | Knowledge of the propagation of sensor errors in strapdown inertial navigation is crucial for the design of inertial and integrated navigation systems. The propagation of initialization errors and deterministic sensor errors is well covered in the literature. If considered at all, the propagation of inertial sensor noise has typically been assessed for un-correlated (white) Gaussian noise. Real inertial sensor noise, however, is time-correlated (colored) and best described by a combination of different stochastic processes. In this paper, we demonstrate how a navigation system’s response to colored noise input differs from the response to bias-like or white noise inputs. We present a method for assessing the navigation error from various inertial sensor noise processes without the need for time-consuming Monte Carlo simulations and demonstrate its application and validity with real sensor data. The proposed method is used to determine in which scenarios the sensor’s real noise can be approximated by simple white Gaussian noise. The results indicate that neglecting colored sensor noise is justified for many applications, but should be checked individually for each sensor configuration and mission. |
| first_indexed | 2024-03-10T14:21:01Z |
| format | Article |
| id | doaj.art-057b3cd1e09142438b4c92a604af298c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T14:21:01Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-057b3cd1e09142438b4c92a604af298c2023-11-20T23:22:02ZengMDPI AGSensors1424-82202020-12-012023691410.3390/s20236914Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial NavigationChristopher Blum0Johann Dambeck1Department of Aerospace and Geodesy, Institute of Flight System Dynamics, Technical University of Munich, 85748 Garching, GermanyDepartment of Aerospace and Geodesy, Institute of Flight System Dynamics, Technical University of Munich, 85748 Garching, GermanyKnowledge of the propagation of sensor errors in strapdown inertial navigation is crucial for the design of inertial and integrated navigation systems. The propagation of initialization errors and deterministic sensor errors is well covered in the literature. If considered at all, the propagation of inertial sensor noise has typically been assessed for un-correlated (white) Gaussian noise. Real inertial sensor noise, however, is time-correlated (colored) and best described by a combination of different stochastic processes. In this paper, we demonstrate how a navigation system’s response to colored noise input differs from the response to bias-like or white noise inputs. We present a method for assessing the navigation error from various inertial sensor noise processes without the need for time-consuming Monte Carlo simulations and demonstrate its application and validity with real sensor data. The proposed method is used to determine in which scenarios the sensor’s real noise can be approximated by simple white Gaussian noise. The results indicate that neglecting colored sensor noise is justified for many applications, but should be checked individually for each sensor configuration and mission.https://www.mdpi.com/1424-8220/20/23/6914inertial navigationinertial measurement unitsensor errorsnavigation performancenoise processeserror propagation |
| spellingShingle | Christopher Blum Johann Dambeck Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial Navigation Sensors inertial navigation inertial measurement unit sensor errors navigation performance noise processes error propagation |
| title | Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial Navigation |
| title_full | Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial Navigation |
| title_fullStr | Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial Navigation |
| title_full_unstemmed | Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial Navigation |
| title_short | Analytical Assessment of the Propagation of Colored Sensor Noise in Strapdown Inertial Navigation |
| title_sort | analytical assessment of the propagation of colored sensor noise in strapdown inertial navigation |
| topic | inertial navigation inertial measurement unit sensor errors navigation performance noise processes error propagation |
| url | https://www.mdpi.com/1424-8220/20/23/6914 |
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