| 摘要 |
The present invention relates to navigation technology and, more particularly, to a precision topography-aided navigation apparatus using an elevation-adaptive radio altimeter in which detection is allowed to be performed by using a plurality of waveforms that can be convertibly generated according to detected altitudes. The navigation apparatus that measures the altitude of a flight vehicle includes a continuous wave generating unit that generates a continuous wave signal; a frequency modulated wave generating unit that generates a linear frequency modulation signal by using the continuous wave signal which is generated by the continuous wave generating unit; and a control unit that controls so that at least one of the continuous wave signal generated by the continuous wave generating unit and the linear frequency modulation signal generated by the frequency modulated wave generating unit is transmitted on the basis of the altitude of the flight vehicle. |
