Luciano Guerriero

• Italian Laurea in Physics, Padua University, 1952
• Professor Emeritus at Politecnico di Bari, Bari, Italy

Remote sensing images find application in several different domains, such as land cover or land usage observation, environmental monitoring, and urbanization. This latter field has recently witnessed an interesting development with the use of remote sensing for infrastructural monitoring. In this work, we present an analysis of Sentinel-1 images, w...

Continuous monitoring of coastal areas is a necessary condition for proper coastal activities regulation. Coastal area alterations, even in the short term, in fact, may lead to a significant social change in the development of economic activities and lifestyle in populations living in coastal regions. This paper deals with the development of an int...

The present work concerns the development of an automatic Fishing Forecasting System (FiFoS) where satellite observations, ancillary data and in situ measurements (Catch Per Unit Effort) are used to set up, calibrate and validate a fishing forecasting model. Multi-temporal and multi-sensor data fusion techniques are applied to multi-spectral data i...

By mapping the concentration of chlorophyll-a (CHL) and the temperature of the sea surface (SST), satellite images reveal the complex dynamics of marine waters and prove to be a very powerful tool when used to detect potential fishing areas, significantly reducing the time of the search, the fuel consumption and the human effort, and simultaneously...

This study is aimed at exploring the potentials of SAR Interferometry (InSAR) to aid Unmanned Aerial Vehicles (UAV) navigation. The basic idea is to infer both position and attitude of an aerial platform by inspecting the InSAR phase derived by a real time SAR interferometer mounted onboard the platform. Thanks to the expected favorable conditions...

The TerraSAR-X © mission, launched in 2007, carries a new X-band Synthetic Aperture Radar (SAR) sensor optimally suited for SAR interferometry (InSAR), thus allowing very promising application of InSAR techniques for the risk assessment on areas with hydrogeological instability and especially for multi-temporal analysis, such as Persistent Scattere...

This work is focused on the phase validation of interferograms obtained by combining COSMO-SkyMed SAR images acquired by a single satellite (temporal baseline coincident with the orbital repeat cycle) or even by two satellites of the SAR constellation in equi-phased configuration on the orbital plane (temporal baseline: 8 days), thus minimizing the...

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Monitoring and managing small coastal ecosystems requires a considerable understanding of the temporal dynamics of biophysical factors describing the coastal water systems. For this reason, daily observation from space could be a very efficient tool. The objective of the work described in this paper is to evaluate the contribution of remote sensing...

The use of satellite technology in monitoring environmental conditions of coastal waters for an early detection of pollution and eutrophication phenomena is of increasing importance. The daily monitoring of Sea Surface Temperature utilizing low-resolution multispectral sensors, especially designed for atmospheric and oceanographic studies, requires...

Operational monitoring of slope instabilities by SAR Interferometry poses a number of challenges due to the limited spatial extent of the landslide areas and rainy conditions usually associated with mass movement events. In this work we present the results of the application of both conventional DInSAR techniques, and a point-by-point, multitempora...

Operational monitoring of slope instabilities by SAR interferometry poses a number of challenges due to the limited spatial extent of the landsliding areas and the rainy conditions usually associated with mass movement events. In this work, we present applications of DInSAR techniques to the assessment of the stability of landslide-prone areas. A l...

The use of Mean-Field theory to unwrap principal phase patterns has been recently proposed. In this paper we generalize the Mean-Field approach to process phase patterns with arbitrary degree of undersampling. The phase unwrapping problem is formulated as that of finding the ground state of a locally constrained, finite size, spin-L Ising model und...

Use of InSAR techniques in the study of unstable slopes has been suggested in recent works. However, in the ease of mass movements, which typically occur in high-relief terrain and are of limited areal extent, the detection of ground surface deformation is difficult. Moreover, the presence of vegetation cover and atmospheric effects introduces cohe...

A novel deterministic approach to InSAR phase unwrapping, based on mean-field annealing, has been recently developed. The authors generalize the algorithm to process input phase patterns with arbitrary degree of undersampling. They show the performances of the proposed methodology on synthetic test phase surfaces

Use of mean-field annealing theory is proposed for solving the phase-unwrapping (PU) problem. PU is formulated as a constrained optimization problem for the field of integer corrections to be added to the wrapped gradient field. A deterministic algorithm is described to provide an approximation of the average of the correction field over the global...

The problem of phase unwrapping of two-dimensional phase signals has gained a considerable interest in recent years. The areas of applications include speckle imaging, magnetic resonance imaging and Synthetic Aperture Radar (SAR) interferometry. Phase unwrapping deals with the problem of estimating an absolute phase f from the observation of its no...

In the last years, both local and global analysis techniques for the effective processing of interferometric SAR data have been proposed. We developed two local approaches to eliminate inconsistencies in the measured (wrapped) phase field, based on the local configurations of phase gradients in finite windows. The first technique adopts a fixed sea...

2-D phase unwrapping, a problem common to signal processing, optics, and interferometric radar topographic applications, consists in retrieving an absolute phase field from principal, noisy measurements. In this paper, we analyze the application of neural networks to this complex mathematical problem, formulating it as a learning-by-examples strate...

A new, to our knowledge, algorithm for the phase unwrapping (PU) problem that is based on stochastic relaxation is proposed and analyzed. Unlike regularization schemes previously proposed to handle this problem, our approach dispells the following two assumptions about the solution: a Gaussian model for noise and the magnitude of the true phase-fie...

A stochastic algorithm for solving the Phase Unwrapping (PU) problem has been implemented on a APE100/Quadrics SIMD architecture. PU is formulated as a constrained optimization problem for a vector field of integers and it is solved by the Parallel Tempering tecnique, which allows an efficient implementation on the APE100 architecture.

SAR Interferometry can be used to derive topographic information (DEM) on the earth surface. An operation called geocoding is necessary to translate the DEM from a range-azimuth to a latitude-longitude reference system. This paper introduces a new algorithm for geocoding interferometric DEMs based on an iterative procedure using the reference ellip...

High resolution extended DEM can be obtained from interferometric SAR image pairs. In order to evaluate the elevation of a pixel with respect to a slant-range reference plane, its absolute interferometric phase is required and this is usually derived unwrapping a 2D interferometric fringe pattern. Different methods have been suggested for phase unw...

Various papers on space tethers are presented. The general topics addressed include: the space program context for tethers, early experimental validation of tethers, tether dynamics simulations, electrodynamics aspects of tethers, and tethers for science and innovative uses. Also considered are: tethers in space, tether dynamics, tethers on station...

A collection of papers on the applications of tethers in space is presented. Tether flight experiments of the past, in planning stages, and in the future are examined. Tether dynamics and the applications and technical aspects of electrodynamic tethers are addressed. The use of tethers on the Space Station and applications in the Space Station era...

Contents: 1. What can tethers do in space? A tutorial. 2. Shuttle flights: opening the era of tethers. 3. Tether dynamics: understanding behavior and control. 4. Electrodynamics: new approaches to space power. 5. The Space Station era: tethers for science, technology and operations. 6. Technology development: the key to success. 7. Panel discussion...

The Italian National Program is now in the process of reviewing the planning of the next five years and is taking into account the new situation that derives from the recent decisions relative to the international programs for the Space Station and Ariane 5. Several projects of the national program are now well ahead in the C/D phase and are expect...

Data are presented on the inclusive production of π±, K±, p, and p̅ for π+, K+, and protons incident on nuclear targets at 100 GeV. The results cover the kinematic range 30≤P≤88 GeV/c for Pt=0.3 and 0.5 GeV/c. The observed A dependence of the invariant cross sections exhibits remarkable simplicity, which does not naturally follow from current model...

An experiment using the Fermilab Single Arm Spectrometer (SAS) facility and an associated nonmagnetic vertex detector studied the reactions a+p→c+X, where a and c were π±, K±, p, or p̅ . Extensive measurements were made at 100 and 175 GeV/c beam momenta with the outgoing hadrons detected in the SAS covering a kinematic range 0.12<x<1.0 and pT<1.25...

Preliminary large transverse energy cross sections of 150, 300 GeV pions and protons on hydrogen measured with a large acceptance, segmented calorimeter are presented. Processes other than the scattering of two constituents appear to dominate this deep inelastic hadron scattering process.

Quark structure functions have been extracted from low-pT inclusive hadron production data for the pion and kaon with use of the recombination model. nπ=1.0±0.1 and nK=2.5±0.6 is obtained, where n is the leading (1-x) power of the nonstrange-valence-quark distribution. Both the pion and kaon nonstrange-sea-quark functions have n≃3.5.

This paper presents the results of a study of the dominant neutral final states from π-p interactions. The data were obtained in an experiment performed at the Brookhaven National Laboratory Alternating Gradient Synchrotron, using a set of steel-plate optical spark chambers surrounding a liquid-hydrogen target. We present differential and total cro...

This paper presents the results of a study of the dominant neutral final states from ..pi../sup -/p interactions. The data were obtained in an experiment performed at the Brookhaven National Laboratory Alternating Gradient Synchrotron, using a set of steel-plate optical spark chambers surrounding a liquid-hydrogen target. We present differential an...

We present high-statistics results on the reactions a+p→c+X where a and c can be any of π±, K±, p, or p̅ . The data were taken at 100 and 175 GeV/c incident momenta using the Fermilab Single-Arm Spectrometer operated over the kinematic range 0.2<x<1.0 and pt<~1.0 GeV/c. Investigating the x dependence of the data, we find agreement with a quark-part...

We present a partial wave amplitude analysis of the differential cross sections for p̄p → π0π0 at 25 energies from 2.12 to 2.43 GeV. The results suggest the presence of a JPCIG = 2++0+ resonance at 2.15 GeV. An isospin decomposition of p̄p → π+π- is also presented.

We present measurements from a counter-optical spark chamber experiment of the differential cross sections for p¯p --> π0π0, π0η0 at 25 momenta in the range 1.1 - 2.0 GeV/c (c.m. energy 2.12 to 2.43 GeV). Approximately 750 000 pictures were taken in the experiment. Work supported in part by the USA-Italy Scientific Cooperation Program and the Isti...

We describe a system of two groups of multiwire proportional chambers and its special purpose interface used in the Single Arm Spectrometer (SAS) facility at Fermilab. The first set measures the coordinates of the fast particle going into the spectrometer arm with a space resolution down to ±0.5 mm. The second set, close to the target, measures the...

We have performed a high-sensitivity search for massive long-lived particles produced at 2.5 mrad by 400-GeV/c protons on a beryllium target using time-of-flight, Cherenkov, and calorimetric techniques. A total of ${10}^{11}$ light particles (${\ensuremath{\pi}}^{\ensuremath{-}},{K}^{\ensuremath{-}},\overline{p}$) was sampled at 70 GeV/c. This expe...

The relative probability distribution of π±and π0 mesons in annihilation was measured in 10 MeV bins from 2.15 to 2.23 GeV. No significant variation in probabilities was found, and mean values are consistent with those reported at 2.28 GeV. Observed multiplicity distributions are consistent with two-body cascading on the statistical model under equ...

Measurements of inclusive cross sections at 100 GeV/c are presented for the double-charge-exchange reactions a/sup +/p ..-->.. ..pi../sup -/X with a = ..pi.., K, or p. The measurements covered a kinematic range in the Feynman x variable of 0.3 < or = x < or = 0.9 at transverse momenta of 0.3 and 0.5 GeV/c. A model summing the contributions from res...

The differential cross sections for the elastic scattering of ..pi../sup +/, ..pi../sup -/, K/sup +/, K/sup -/, p, and p-bar on protons have been measured in the t interval -0.04 to -0.75 GeV/sup 2/ at five momenta: 50, 70, 100, 140, and 175 GeV/c. The t distributions have been parametrized by the quadratic exponential form dsigma/dt = A exp( B abs...

The differential cross sections for the elastic scattering of π+, π-, K+, K-, p, and p¯ on protons have been measured in the t interval -0.04 to -0.75 GeV2 at five momenta: 50, 70, 100, 140, and 175 GeV/c. The t distributions have been parametrized by the quadratic exponential form dσdt=Aexp(B|t|+C|t|2) and the energy dependence has been described...

This Letter reports measurements for the processes a+p-->a+X where a is pi+/-, K+/-, or p+/- over range of the Feynman x from 0.7 to 0.975 at Fermilab energies. The data for all reactions are well represented by a simple parametrization. The cross sections show significant energy dependence in the high-x region. While the data are consistent with f...

Impact-parameter representations of elastic differential cross sections for the processes π±p, K±p, pp, and p̅ p at incident energies from 50 GeV to 175 GeV and in the -t range 0.03-0.75 GeV2 are presented. The meson-baryon interactions are found to be 20% more transparent than the baryon-baryon interaction, and to have an interaction radius which...

Impact-parameter representations of elastic differential cross sections for the processes ..pi../sup plus-or-minus/p, K/sup plus-or-minus/p, pp, and p-barp at incident energies from 50 GeV to 175 GeV and in the -t range 0.03--0.75 GeV/sup 2/ are presented. The meson-baryon interactions are found to be 20% more transparent than the baryon-baryon int...

Measurements of inclusive hadron processes of the type a+p..-->..b+xxx have been made at energies of 50 to 175 GeV for Feynman x in the range 0.75 to 0.95 and -t's up to 0.65 GeV/sup 2/. The invariant cross sections are satisfactorily parametrized by a simple form derived from Regge theory. (AIP)

A comparison of K/sup plus-or-minus/p and p/sup plus-or-minus/p elastic scattering is made for incident energy 50 to 175 GeV. Average values of 0.19 +- 0.04 and 0.11 +- 0.02 GeV/sup 2/ were found for the invariant-momentum-transfer values of the Kp and pp crossover points, respectively. (AIP)

We describe a scintillation counter - optical spark chamber system developed for the detection of high energy gamma rays and neutrons. We describe the system components and their use in two completed experiments.

The p total cross section was measured from 2130 to 2250 MeV with mass resolution 2.25 MeV (FW). No fine structure was found with σΓ above the statistical limit of 7 MeV mb. A spin J particle coupled to the p system must have partial width less than MeV.

We report differential cross sections for π−p → nπ0 in the backward hemisphere at incident momenta of 2.6, 3.5, 4.3, 6.0, and 8.0 GeV/c. We observe less pronounced structure than some previous measurements with a shallow dip displaced from that seen in π+p elastic scattering.

Decay branching ratios of the η0-meson into 2γ, 3π0, π0γγ, π+π−π0, π+π−γ are presented. Neutral and charged modes are detected in the same apparatus. Eta triggers are indipendent of the decay mode, being obtained from the neutron time of flight. The distribution of eta decays among the various possible branches is derived from multiplicities of cha...

The developments in the hv pulsing system which have been made in order to reduce the rise time and the delay of the hv pulse at the plates of a large spark chamber system are reported.Higher efficiency has been achieved feeding each chamber through an alternate polarity multiple spark gap.

We have performed a high-sensitivity search for massive long-lived particles produced at 2.5 mrad by 400-GeV/c protons on a beryllium target using time-of-flight, Cherenkov, and calorimetric techniques. A total of 10{sup 11} light particles ({pi}{sup -},K{sup -},{bar p}) was sampled at 70 GeV/c. This experiment places a limit of 1.1 x 10{sup -37} c...

An experiment was performed to measure the angular distributions in the ; reactions anti pp $Yields$ $pi$°$pi$° and $Yields$ $pi$°eta$sup ; 0$ at an incident anti p momentum of 1.752 GeV/c. Structure is seen in the ; angular distributions for both reactions. These data are combined with those of ; Eisenhandler et al., on anti pp $Yields$ $pi$$sup +...

It is proposed to measure the hadron spectra resulting from high energy proton-proton collisions using a single arm focusing spectrometer. These measurements will provide elastic and inelastic P-P cross sections for incident beam energies up to 200 GeV/c and for momentum transfers |t| from 0.01 up to about 10 to 15 (BeV/c)². In addition, they will...

A detailed analysis of the data concerning the reaction K/sup +/ + p ; yields K° + n was studied to better understand the energy associated with ; the total cross-section and the angular distribution of the differential cross ; section. It is found that the best fit for the data, corrected for all effects ; in nuclei, indicate that the total charg...

A study was made of the neutral decay mode of the Kâmeson whose ; products are taken to be two neutral pions. The Kâ-mesons were produced in ; a bubble chamber by 1140 and 1060 Mev/c pi ⁻-mesons. In 180,000 pictures, ; 440 charged decays of the Kâ-meson into pi /sup +/- and pi ⁻-mesons ; and 172 neutral decays into two pi °-mesons were foun...

The charge exchange reaction pi ⁻ + p yields pi ° + N ; was investigated. In one experimental series a collimated and focused pi ⁻; beam was directed axially at the target. The films were scanned for e/sup +/ - ; e⁻ pairs. The other technique involved passing the pi ⁻ beam ; directly through the chamber without an Hâ target, at incident mo...

In *Erice 1976, Proceedings, Understanding The Fundamental Constituents Of Matter*, 741-775

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A description of an iron plate spark chamber is described. It covers ¾ of the solid angle about a liquid hydrogen target. The fifty steel plates (750×750×2 mm), separated by 3 mm, furnish a thickness of 5 radiation lengths. The voltage risetime of the plates is less than 10 nsec. The system has been used in a 250 000 picture experiment.

DOI:https://doi.org/10.1103/PhysRevLett.13.636

DOI:https://doi.org/10.1103/PhysRevLett.13.640

DOI:https://doi.org/10.1103/PhysRevLett.9.127