In this paper, evolutionary algorithm is used to optimize the flicker function of band-limited Gaussian noise interference, which disturbs convergence adaptive based on LMS in GPS receiver, so that average null depth receiver under equal power lower, and better jamming effect achieved. The simulation results show paper has than different quantity.

We introduce and analyze the first data from an array of closely spaced Global Positioning System (GPS) scintillation receivers established in the auroral zone in late 2013 to measure spatial and temporal variations in L band signals at 100-1000 m and subsecond scales. The seven receivers of the Scintillation Auroral GPS Array (SAGA) are sited at Poker Flat Research Range, Alaska. The receivers...

Post-sunset disturbances in the equatorial ionosphere routinely cause rapid phase and amplitude fluctuations (i.e., scintillation) of radio waves propagating through the disturbed regions. The intensity of scintillations is positively correlated with the solar cycle and the associated signal fades will often exceed 20 dB at L-band frequencies during solar maximum. The effect of such an environm...

In this paper, we propose an integrated Genetic Algorithm with Hill Climbing to solve the matrix bandwidth minimization problem, which is to reduce bandwidth by permuting rows and columns resulting in the nonzero elements residing in a band as close as possible to the diagonal. Many algorithms for this problem have been developed, including the wellknown CM and GPS algorithms. Recently, Marti e...

The Global Positioning System is fruit of those studies which became able to use the L band of carrier phase (frequency microwaves around 1 up to 3 Ghz and wave length close to 23 cm) for calculating the spatial trilateration. Therefore, in 1978 began the launch of the first NAV‐ STAR (Navigation Satellite with Time and Ranging) satellites – the begging of GPS as is known today. Due to the high...

Recently, the demand on position detection system using WiFi[1] and cellular phone[2] have been appeared. Car navigation system and 3G cellular phone use GPS(Global Positioning System) for position detection. However, it is impossible to use GPS underground because GPS signal cannot be received due to obstacles. Therefore, many position detection methods to use at narrow area have been proposed...

We discovered that the optical to near-infrared properties of Gigahertz Peaked Spectrum (GPS) galaxies are consistent with them having old stellar populations , with little or no contamination from their active nuclei. They seem to be a homogeneous class of object, in luminosity and scatter comparable to rst ranked cluster galaxies. At z 1 the K band luminosities are about a magnitude fainter t...