the invention allows a user to derive the pseudo distance from satellite signal transmitter (10) placed into earth orbit without the knowledge of the modulation code sequenceby the signal. a high frequency signal is modulated (fm) with a component at a given frequency, which is transmitted from a satellite is intercepted by a user.the component is recovered from the intercepted signal. the phase and frequency of the component is measured.from these measurements and the like made from similar satellites, the pseudo range (1.5) $$$$$$$the satellite can be derived.in particular, a fractional phase phi is derived from the measured phase and frequency of the intercepted signal.a value of range doppler ($$$$$$$(1,5) (d) is also derived from the measured frequencies of the satellites.the value of doppler distance is divided by the wavelength of the frequency to produce an integer and a rest.the number (s / a) is added to the fractional phase value to generate a pseudo distance is proportional to the ($(1,5) $(c / a).
展开▼
机译：本发明允许用户在不知道信号调制码序列的情况下，从放置在地球轨道上的卫星信号发射机（10）得出伪距离。高频信号由给定频率的分量调制（fm），该分量从卫星发射，被用户拦截，然后从拦截的信号中恢复该分量。根据类似卫星的测量和类似测量，可以得出卫星的伪距（1.5）$$$$$$$，尤其是分数phi可以从卫星得出测得的截获信号的相位和频率。距离多普勒的值（$$$$$$$（1,5）（d）也从卫星的测得频率中得出。多普勒距离的值除以产生整数和余数的频率的波长。将数字（s / a）添加到分数相位值以生成伪距离与（$（1,5）$（c / a ）。
展开▼
