The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) is dedicated to the fine spectroscopy (∆E: 2 keV FWHM @ 1.3 MeV) and fine imaging (angular resolution: 12 FWHM) of celestial gamma-ray sources in the energy range 15 keV to 10 MeV with concurrent source monitoring in the X-ray (3 35 keV) and optical (V, 550 nm) range. The mission is conceived as an observatory led by ESA with contri...

This review offers a critical analysis of the state of the art of medical microbubbles and their application in therapeutic delivery and monitoring. When driven by an ultrasonic pulse, these small gas bubbles oscillate with a wall velocity on the order of tens to hundreds of meters per second and can be deflected to a vessel wall or fragmented into particles on the order of nanometers. While si...

This document specifies a Real-time Transport Protocol (RTP) payload format to be used for Adaptive Multi-Rate (AMR) and Adaptive MultiRate Wideband (AMR-WB) encoded speech signals. The payload format is designed to be able to interoperate with existing AMR and AMR-WB transport formats on non-IP networks. In addition, a file format is specified for transport of AMR and AMR-WB speech data in sto...

This document specifies a Real-time Transport Protocol (RTP) payload format to be used for Adaptive Multi-Rate (AMR) and Adaptive MultiRate Wideband (AMR-WB) encoded speech signals. The payload format is designed to be able to interoperate with existing AMR and AMR-WB transport formats on non-IP networks. In addition, a file format is specified for transport of AMR and AMR-WB speech data in sto...

The Stanford Satellite Systems Development Laboratory (SSDL) is currently investigating advanced satellite control technologies aimed at improved spacecraft system operations. One technique involves a unique real-time payload control strategy for satellites operating within a crosslinked constellation. This strategy effectively merges payload scheduling, traditionally considered a high level pl...

Earth observation (EO) missions remain a challenging task for small satellite platforms due to their demanding requirements and space environment effects. In this study, the camera payload development mission are presented together with ground-based testing results 6U CubeSat called KITSUNE, operating at low orbit. The major challenge of is maintaining focus optical system despite thermal vacuu...

Steganography is art of invisible Communication. It strives to hide the existence of communicated message in appropriate medium i.e. Image, Audio or Video. So as not to arouse an eavesdropper’s suspicion. Various techniques with Objectives of robustness, Payload and Undetectability are available and have their respective pros and cons. Various Steganography Techniques are employed depending on ...

The infrared astronomy group of Department Astronomy and Astrophysics at Tata Institute Fundamental Research has been pursuing astronomical instrumentation activities since its inception. routinely involved in balloon-borne programs from the field station Hyderabad with indigenously developed payloads. Ground-based began a single element detector. Later, over time, larger format array detectors...

This paper presents a novel image hiding method that utilizes a two-way block-matching procedure to search for the highest-similarity block for each block of the important image. The bases and indexes obtained together with some not-well-matched blocks are recorded in the least significant bits of the cover image using a hop scheme. The method exhibits a high data payload, which reduces the sto...

The conventional reversible data hiding (RDH) algorithms often consider the host as a whole to embed a payload. In order to achieve satisfactory rate-distortion performance, the secret bits are embedded into the noise-like component of the host such as prediction errors. From the rate-distortion view, it may be not optimal since the data embedding units use the identical parameters. This motiva...