Microwave Measurements Part II Non-linear Measurements

Rapid estimation of sunflower leaf area from linear measurements

LASSO with Non-linear Measurements is Equivalent to One With Linear Measurements

Consider estimating an unknown, but structured (e.g. sparse, low-rank, etc.), signal x0 ∈ R from a vector y ∈ R of measurements of the form yi = gi(aix0), where the ai’s are the rows of a known measurement matrix A, and, g(·) is a (potentially unknown) nonlinear and random link-function. Such measurement functions could arise in applications where the measurement device has nonlinearities and u...

The LASSO with Non-linear Measurements is Equivalent to One With Linear Measurements

Consider estimating an unknown, but structured (e.g. sparse, low-rank, etc.), signal x0 ∈ R from a vector y ∈ R of measurements of the form yi = gi(aiTx0), where the ai’s are the rows of a known measurement matrix A, and, g(·) is a (potentially unknown) nonlinear and random link-function. Such measurement functions could arise in applications where the measurement device has nonlinearities and ...

Accuracy and precision of measurements obtained from conventional cephalograms and CBCT scan in orthodontics linear diagnostic measurements

Background and Purpose:  Due to the important role of imaging in the diagnosis and treatment plan in orthodontics, CBCT (Cone Beam Computed Tomography) images because of their three-dimensional nature, can minimize the disadvantages of two-dimensional images such as magnification, distortion, or superimposition. The purpose of this study was to evaluate the accuracy of conventional cephalograms...

Microwave Interferometers for Non - Contact Vibration Measurements on Large Structures

This paper describes a non-contact vibration measuring system that is based on a microwave interferometer similar to those used to detect the presence of people in monitored areas. Displacement response of a target surface on the structure relative to the interferometer is measured by analyzing the interference in microwaves reflected off the vibrating target surface. The system was built from ...