COM DEV International Ltd.
|COM DEV International Ltd. Patent applications|
|Patent application number||Title||Published|
|20130275842||METHODS AND SYSTEMS FOR CONSISTENCY CHECKING AND ANOMALY DETECTION IN AUTOMATIC IDENTIFICATION SYSTEM SIGNAL DATA - Methods and systems for validating positions reported in AIS message signals by fitting suitably chosen functions to signal characteristic data, such as timing and Doppler shift data, derived from a plurality of AIS message signals. Ships whose reported positions deviate from the fitted function may be flagged as suspect.||10-17-2013|
|20110309900||DIELECTRIC RESONATOR AND FILTER WITH LOW PERMITTIVITY MATERIAL - A resonator cavity for supporting a plurality of resonant modes and filtering electromagnetic energy includes a cavity and a resonator element with a mounting flange. The cavity is defined by a top end wall, a bottom end wall and a sidewall and has a longitudinal axis along its length is defined. The resonator element is positioned within the cavity along the longitudinal axis and includes a mounting flange. The resonator element is only in physical contact with the cavity through the mounting flange at a mounting location and where at least one resonant mode of the electromagnetic energy exhibits a local minimum. The dimensions of the cavity and the resonator element are selected so that the associated electromagnetic energy is defined by an electromagnetic field pattern that substantially repeats itself at least twice along the length of the resonator.||12-22-2011|
|20090316159||SLAB WAVEGUIDE SPATIAL HETERODYNE SPECTROMETER ASSEMBLY - An optical broadband micro-spectrometer containing an input optical assembly, a group of slab waveguide spatial heterodyne spectrometer (SHS) integrated circuits (ICs), a detection module and a processor for multi-line detection. The input optical assembly applies an input light signal uniformly with respect to brightness and frequency to the apertures of the waveguides and may project a pupil image onto the SHS input face and may be a scanner. Each slab waveguide spatial heterodyne spectrometer (SHS) integrated circuit (IC) contains at least one slab waveguide SHS IC. The detection module bonds directly to the slab waveguide output apertures. Each slab waveguide SHS IC may contain one or more slab waveguide SHS.||12-24-2009|
|20080304597||SYSTEM AND METHOD FOR DECODING AUTOMATIC IDENTIFICATION SYSTEM SIGNALS - Various embodiments are described herein for a system and method of detecting Automatic Identification System (AIS) signals in space and decoding these signals. In one aspect, a system for performing this function is described which includes a receiver configured to receive the plurality of AIS signals and pre-process the plurality of AIS signals to produce digital input data, and a processing unit configured to process the digital input data to identify one or more candidate AIS message signals based on Doppler offsets associated with the digital input data, determine corresponding Doppler offset estimates and time estimates of the one or more candidate AIS message signals, decode the one or more candidate AIS message signals to obtain corresponding message segments and validate the decoded message segments for proper AIS formatting.||12-11-2008|
|20080233865||MULTI-BEAM COMMUNICATION SYSTEM AND METHOD - A method of flexibly allocating capacity in a satellite coverage area, comprising establishing a frequency reuse pattern of at least two interleaved sets of cells, assigning a polarization to each set of cells, such that adjacent sets of cells alternate in orthogonal polarization, flexibly assigning satellite transmit power to at least one cell, flexibly assigning frequency and bandwidth to at least one cell, and moving frequencies, bandwidths, and satellite transmit power among the cells within each set, independently of the other sets, ensuring that at all times no two adjacent cells within a given set share a common frequency.||09-25-2008|
Patent applications by COM DEV International Ltd.