A real-time airborne terrain aided inertial navigation system and its performance analysis

Zhang, Q.Q.; Zhao, Luodi; Zhou, Ji; Wang, B.H.; Zhang, Y.P.

doi:10.1016/j.asr.2017.10.038

Cited by 8 publications

(24 citation statements)

References 19 publications

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“…Legacy TRN systems required significant pre‐mission planning to create reference Digital Elevation Models (DEMs) and were generally only relevant at lower altitudes where a radar altimeter's return was considered reliable (Boozer & Fellerhoff, 1985). The estimation filters were also prone to false fixes due to insufficient modeling of the highly nonlinear terrain‐matching problem (Zhang et al., 2017). Although many legacy TRN systems were proven effective, these operational drawbacks largely prevented their fielding as methods of GNSS matured.…”

Section: Introductionmentioning

confidence: 99%

“…Early TERCOM systems were noted as having accuracies in the 100s of meters (Golden, 1980). Although TERCOM was effective in achieving fast localization with large initial position error, it performed poorly in real time and restricted aircraft maneuvering during update (Zhang et al., 2017). In contrast to the batch estimation used by TERCOM, SITAN employed recursive estimation and was based on the extended Kalman filter.…”

Section: Introductionmentioning

confidence: 99%

“…Navigation accuracies as low as 75‐meters CEP were achieved (Boozer & Fellerhoff, 1985). However, SITAN was noted as being prone to false‐fixes during conditions of large initial position error or large terrain gradient variance (Zhang et al., 2017). Many modern studies have employed variants of both TERCOM and SITAN together.…”

Section: Introductionmentioning

confidence: 99%

“…Many modern studies have employed variants of both TERCOM and SITAN together. The use of TERCOM in "acquisition" modes and SITAN in "tracking" modes was popular and is evident in the literature (Boozer & Fellerhoff, 1985; Hicks, 1993; Hostetler & Andreas, 1983; Nielson, 1994; Sineglazov, 2014; Zhang et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

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Terrain‐referenced navigation using a steerable‐laser measurement sensor

Carroll

Canciani

2021

Navigation

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The benefits of GNSS have created dependencies on navigation in modern day aviation systems. Many of these systems operate with no backup navigation source. This makes the capabilities supported by precise navigation vulnerable. This paper investigates a contemporary approach to terrain‐referenced navigation (TRN), used to preserve an aircraft's navigation solution during periods of GNSS denial. Traditionally, TRN has been accomplished using a single measurement sensor pointed nadir to an aircraft. Although shown to be effective, this approach limits the achievable navigation accuracy by restricting the measurable terrain gradients to those below an aircraft. This paper explores an alternative approach to TRN that maximizes navigation information through optimal steering of a gimbaled laser. A Cramér‐Rao lower bound analysis as well as a high‐fidelity simulation establishes the utility of optimal steering while employing TRN. This original approach to TRN shows the order of magnitude improvements in navigation performance over existing methods.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Terrain‐referenced navigation using a steerable‐laser measurement sensor

Carroll

Canciani

2021

Navigation

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“…TAN is a navigation technology that estimates the aircraft's position information by comparing the altitude measured by an altimeter with the digital elevation model (DEM). It can also acquire accurate position information by integrating with INS [2]. In other words, TAN is one of the key technologies that ensures the high reliability of air vehicles as the alternative of that is vulnerable to hostile radio disturbance.…”

Section: Introductionmentioning

confidence: 99%

Radial basis function network‐based available measurement classification of interferometric radar altimeter for terrain‐aided navigation

Lee

Bang

2018

IET Radar, Sonar & Navigation

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Real Time Airborne Terrain Aided Inertial Navigation System in Multi-resolution Terrain

Chen

Zhang

Zhao

2021

Lecture Notes in Electrical Engineering

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In view of the problem that the terrain aided navigation solution needs to set the filtering parameters according to the resolution of terrain elevation database, this paper proposes a real-time airborne terrain aided inertial navigation system in multi-resolution terrain. The system obtains the terrain elevation data with the highest resolution under the carrier flight in real time through configuration file. The fast adaptability analysis of the planning area is carried out for different resolution terrain data, and the corresponding filtering and divergence parameters are adjusted to improve the applicability of terrain aided navigation system. The simulation test and comparative analysis are carried out by using the actual digital map elevation data and the simulated flight trajectory. The test results show that the system can effectively reduce the time consumption of the adaptability analysis and improve the applicability of terrain aided navigation system.

show abstract

A real-time airborne terrain aided inertial navigation system and its performance analysis

Cited by 8 publications

References 19 publications

Terrain‐referenced navigation using a steerable‐laser measurement sensor

Terrain‐referenced navigation using a steerable‐laser measurement sensor

Radial basis function network‐based available measurement classification of interferometric radar altimeter for terrain‐aided navigation

Real Time Airborne Terrain Aided Inertial Navigation System in Multi-resolution Terrain

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