Next Article in Journal
From Laser Scanning to Finite Element Analysis of Complex Buildings by Using a Semi-Automatic Procedure
Next Article in Special Issue
Towards the Development of a Low Cost Airborne Sensing System to Monitor Dust Particles after Blasting at Open-Pit Mine Sites
Previous Article in Journal
A Non-Contact Measurement System for the Range of Motion of the Hand
Previous Article in Special Issue
A Multispectral Image Creating Method for a New Airborne Four-Camera System with Different Bandpass Filters
Open AccessArticle

Feasibility of Using Synthetic Aperture Radar to Aid UAV Navigation

1
Geophysical Applications Processing s.r.l., Via Amendola 173, 70126 Bari, Italy
2
National Research Council of Italy, ISSIA institute, Via Amendola 173, 70126 Bari, Italy
3
Dipartimento di Fisica "M. Merlin", Politecnico di Bari, Via Amendola 173, 70126 Bari, Italy
4
IDS—Ingegneria Dei Sistemi S.p.A., Via Enrica Calabresi 24, 56121 Pisa, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Felipe Gonzalez Toro
Sensors 2015, 15(8), 18334-18359; https://doi.org/10.3390/s150818334
Received: 4 May 2015 / Revised: 15 July 2015 / Accepted: 17 July 2015 / Published: 28 July 2015
(This article belongs to the Special Issue UAV Sensors for Environmental Monitoring)
This study explores the potential of Synthetic Aperture Radar (SAR) to aid Unmanned Aerial Vehicle (UAV) navigation when Inertial Navigation System (INS) measurements are not accurate enough to eliminate drifts from a planned trajectory. This problem can affect medium-altitude long-endurance (MALE) UAV class, which permits heavy and wide payloads (as required by SAR) and flights for thousands of kilometres accumulating large drifts. The basic idea is to infer position and attitude of an aerial platform by inspecting both amplitude and phase of SAR images acquired onboard. For the amplitude-based approach, the system navigation corrections are obtained by matching the actual coordinates of ground landmarks with those automatically extracted from the SAR image. When the use of SAR amplitude is unfeasible, the phase content can be exploited through SAR interferometry by using a reference Digital Terrain Model (DTM). A feasibility analysis was carried out to derive system requirements by exploring both radiometric and geometric parameters of the acquisition setting. We showed that MALE UAV, specific commercial navigation sensors and SAR systems, typical landmark position accuracy and classes, and available DTMs lead to estimated UAV coordinates with errors bounded within ±12 m, thus making feasible the proposed SAR-based backup system. View Full-Text
Keywords: UAV; navigation; Geo-referencing; SAR; interferometry; ATR; feasibility UAV; navigation; Geo-referencing; SAR; interferometry; ATR; feasibility
Show Figures

Figure 1

MDPI and ACS Style

Nitti, D.O.; Bovenga, F.; Chiaradia, M.T.; Greco, M.; Pinelli, G. Feasibility of Using Synthetic Aperture Radar to Aid UAV Navigation. Sensors 2015, 15, 18334-18359.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Search more from Scilit
 
Search
Back to TopTop