Using particle filter to track horizontal variations of atmospheric duct structure from radar sea clutter

Estimation of the Atmospheric Duct from Radar Sea Clutter Using Artificial Bee Colony Optimization Algorithm

In this study, the Artificial Bee Colony Optimization (ABCO) algorithm has been proposed to estimate the atmospheric duct in maritime environment. The radar sea clutter power is calculated by the parabolic equation method. In order to validate the accuracy and robustness of ABCO algorithm, the experimental and simulation study are respectively carried out in the current research. In the simulat...

Retrieving Evaporation Duct Heights from Radar Sea Clutter Using Particle Swarm Optimization (pso) Algorithm

Particle Swarm Optimization algorithm (PSO) is a popular stochastic searching optimization algorithm to solve complicated optimization problems. The approach of retrieving duct parameters from the sea-surface reflected radar clutter is also known as Refractivity From Clutter (RFC) technique. RFC technique provides the near-real-time duct parameters to evaluate the radio system performance, with...

Scattering Physics of Multistatic Radar Sea Clutter

Recursive Bayesian electromagnetic refractivity estimation from radar sea clutter

[1] Estimation of the rangeand height-dependent index of refraction over the sea surface facilitates prediction of ducted microwave propagation loss. In this paper, refractivity estimation from radar clutter returns is performed using a Markov state space model for microwave propagation. Specifically, the parabolic approximation for numerical solution of the wave equation is used to formulate t...

Inversion for refractivity parameters from radar sea clutter

[1] This paper describes estimation of low-altitude atmospheric refractivity from radar sea clutter observations. The vertical structure of the refractive environment is modeled using five parameters, and the horizontal structure is modeled using six parameters. The refractivity model is implemented with and without an a priori constraint on the duct strength, as might be derived from soundings...