Aiming to address the chicken-and-egg problem in star identification and the intrinsic parameter determination processes of on-orbit star sensors, this study proposes an on-orbit self-calibration method for star sensors that does not depend on star identification. First, the self-calibration ...
7 For example, bundle adjustment is often used for backend processing to estimate the state of the camera and the position of the key point. However, at present, the rapid development of imaging sensors has led to the acquisition of an increasing amount of image data. Bundle adjustment is ...
Calibration between Light detection and ranging (LiDAR) sensors and inertial measurement units (IMU) is the prerequisite for laser scanning systems to obtain high-quality point clouds. Related methods have been proposed in the last two decades, where the global navigation satellite system (GNSS) or...
SensorsMachine learningPhotonic technologies have enabled a new generation of nulling interferometers such as the GLINT instrument, potentially capable of imaging exoplanets and circumstellar structure at extreme contrast ratios by suppressing contaminating starlight, and paving the way to the characterisation...
Tiejun ChangChangyong CaoI.M. Systems Group, Rockville, MD 20852, USA;NOAA/NESDIS/STAR, College Park, MD 20740, USA;Sensors, Systems, and Next-Generation Satellites
SensorsWavefrontsOptical path differencesPhotonic technologies have enabled a generation of nulling interferometers, such as the guided light interferometric nulling technology instrument, potentially capable of imaging exoplanets and circumstellar structure at extreme contrast ratios by suppressing contaminating ...
Furthermore, the exposed analysis approach in this paper can be a useful methodology for the user to evaluate the performance of any measurement system in a real-time environment. Keywords: pressure sensors; self-calibration algorithm; artificial neural network; pressure measurement system; real-time...