Concept study of UV coverage of Radio interferometry in space using small satellites

Space Very Long Baseline Interferometry (SVLBI) revolutionizes astronomy using multiple satellites for enhanced resolution and sensitivity. This paper analyzes u-v distribution in Space VLBI (SVLBI) with varying satellite numbers and orbits. It explores changes in u-v coverage with identical and diverse orbits. Configurations featuring diverse inclinations, eccentricities, and apogee heights show promise for effective u-v coverage, generating redundant baselines and enhancing data calibration, benefiting low-frequency radio studies like 21cm line.