Phases estimation a method for received signals of a navigation receiver and circuit for carrying out the method

摘要

Phases estimation a method for received signals of a navigation receiver in particular of the gps (global positioning system) or a similar system with the aid of navigation satellites operated using a dll (delay locked loop) - circuit, which contained in the received signal a pseudo random code with a corresponding locally generated pseudo random code and which is correlated on the basis of the pseudo-random carried out at the transmitting end of the phase-shift keying, moreover, with binary data bits, for example, in bpsk (binary phase shift keying) - the form of modulated hf - carrier in the received signal present phase shifts in it can be used as entspreizender manner, one from the despread inphase - signal of the dll - circuit, which is fed, incoherent pll (phase locked loop) - circuit, which the phase of the signal - carrier estimates and the phase and frequency of the inphase - signal is correspondingly corrected, and a data bit - decision element, which for the detection of the data bits by way of an integrator which the modulated data bits containing inphase - signal is applied, characterized in that the output-side inphase - signal of the dll - circuit (15) provided in the data bit - decision element (17) and thus determined in each case of known data bit of the data bit - modulation is corrected so that a signal is formed, the..