In a system for determining the direction of a received signal, e.g. a reflected radar signal or a signal from a remote transmitter, a directional receiving antenna having a directive pattern, such as that shown in Fig. 1, is rotated about a point at constant speed and the received ...
It may be provided with radar absorbers, of well known type, if required, to attenuate non-shifted energy to a point where it approximately matches the signal amplitude from the moving reflector. The radar receiver typically includes an X-band horn, mounted as seen in FIGURE 4 approximately ...
An autonomous system with no Customer Network Investment is described, wherein the system is configurable to operate on in a band in addition to the LTE band. Such system allows the definition of hybrid operations to accommodate the positioning reference signals (PRS) of LTE and already existing...
Such a theorem comes from directional derivative considerations of a convex functional and is discussed in design monographs like (Fedorov 1972; Berger and Wong 2005). For example, if m is the dimension of θ and δx is the design that takes all observations at x, it can be shown that ...
It should be noted that the effects of the distances of the grid point to the radar sites have been implied in the radial variances 𝜎21σ12 and 𝜎22σ22. Equation (15) depicts the GDOP for vector synthesis, but besides the geometry of the grid cell and the radars, it is also ...