The design and analysis of ellipse shaped broad band micro strip patch antenna are discussed in this paper. In modern wireless communication system at the higher frequency, this basically needs all its components to be in compact size. The proposed antenna inspired by ellipse shaped which offer the better performance compare to the conventional antenna. Here, the proposed antenna is one such co...

An important step in the sea ice freeboard to thickness conversion is classification of types, since type affects snow depth and density. Studies using Ku-band CryoSat-2 have shown promise distinguishing FYI MYI based on parametrisation radar echo. Here, we investigate applying same algorithms that success for measurements acquired by SARAL/AltiKa at Ka-band. Four different classifiers are inve...

This paper presents the results of first characterization coincident Ku- and Ka-band ocean surface normalized radar cross section measurements at earth incidence angles 0°–18° using one year wide swath Global Precipitation Measurement (GPM) mission dual frequency precipitation (DPR) data. Empirical geophysical model functions were derived for both bands, isotropic directorial sensitivity assess...

Abstract. With the launch of altimetry satellites with different observation frequencies and survey missions, it is necessary to integrate multi-satellites altimeter data establish a new global marine gravity anomaly model. Based on Ka-band sea surface heights (SSHs) from SARAL/AltiKA Ku-band SSHs other (including HY-2A) in geodetic missions exact repeat model SDUST2021GRA 1? × grid derived. Gr...

Eutelsat plays key role in the provision of mobile services over geosynchronous satellites. Starting with narrowband services for land transports, through broadband maritime service until the most recent IP and multimedia services on board high speed means of transport (trains and airplanes), Eutelsat is present in this market for several years, as services provider or just supplying capacity. ...

For every integer d ≥ 1, there is a unital closed subalgebra A d ⊂ B(H) with similarity degree equal precisely to d, in the sense of our previous paper. This means that for any unital homomorphism u: A d → B(H) we have u cb ≤ Ku d with K > 0 independent of u, and the exponent d in this estimate cannot be improved. The proof that the degree is larger than d − 1 crucially uses an upper bound for ...

The Institute of Space Systems plans to launch the micro-satellite Flying Laptop into a sun synchronous orbit at the end of 2006. The satellite will be equipped with a camera payload system operating in the visible and near infrared spectral range as well as in the thermal region. This payload will be used to monitor the Earth surface with a ground sample distance (GSD) of 25 m in the visible a...

4 Abstract — Satellite communication systems operating at Ku (12/14 GHz) and Ka band (20/30 GHz) frequencies are used for broadband multimedia and internet based services. At these frequencies, the signal will be affected by various propagation impairments such as rain attenuation, cloud attenuation, tropospheric scintillation, ionospheric scintillation, water vapour attenuation, and rain and i...