Pressure field calculations are performed with the help of an effective method based on modelling a structure by a set of point sources placed on the radiating surface.
In the proposed approach, the acoustic domain is split into two parts by an arbitrary artificial boundary enclosing the radiating surface.
The efficiency and accuracy of the analysis is enhanced by employing a quadratic isoparameteric element discretization of the radiating surface.
Once all three are deployed, the radiating surface will be about the size of a tennis court.
In the spread-eagle position, A r was calculated as the proportion of the effective radiating surface area assessed for sedentary adult (0.84) (Kubaha et al. 2004) minus the fraction of the surface area in contact with the mattress (0.095) (Agourram et al. 2010).
To represent the farfield behaviour, the constraint equation specified on the artificial boundary is formulated with a more straightforward boundary integral equation, in which the source surface coincides with the radiating surface discretized with boundary elements.
The increased sensitivity is mainly attributed to the focused radiating surface.
These are defined using a potential function, whose description is based on Hankel or Green baffled functions depending on the radiating surface dimension.
A multi-modal antenna, with sensitivity approximately constant for any incoming linear polarization, with great radiating surface and low directivity has been developed.
The design concept is based on the half-concave geometry, in which the radiating surface is concave while the other surface remains plane.
The fixed installations of transmission antenna, radiating surface and solar array make the SSO platforms of satellite be qualified for the EL1- or EL2-point mission with further advances in fixing the array and removing the battery.
