| 摘要 |
The disclosure relates to a radar apparatus of the type which comprises a transmitter which substantially continuously transmits a modulated carrier wave signal, and a receiver for receiving the carrier wave signal (the echo signal) reflected against an object, and in which the carrier wave signal is modulated with an encoding signal in which one bit in the code is of a duration which is several times longer than the period time of the carrier wave signal, and in which the code of several bits forms a block which is characterized by modulation of a carrier wave with constant frequency. Furthermore, the frequency of the carrier wave is changed between the blocks, so that the transmitter transmits one block at a carrier wave frequency which is different from the carrier wave frequency or frequencies which the receiver is set to receive. A received binary coded signal is, after A/D conversion (1), supplemented with an additional value which is the measurement value with reversed sign, the measurement value or measurement value with reversed sign, respectively, being, in each time step, fed to different range bins (3), where the range bins (3) receive a sequence of measurement values, and in which the given, transmitted code unambiguously determines, for each time step, to which range bin (3) the measurement value or measurement value with reversed sign, respectively, is to be fed, the integration of inputted values in a range bin (3) providing information on a possible target in this range bin. <IMAGE> |
