发明名称 |
SYSTEM FOR CORRELATION AND RECOGNITION OF TERRAIN ELEVATION |
摘要 |
<p>In a dead reckoning navigation system a correlation scheme that operates in the frequency domain (using a discrete cosine transform (DCT) function) is implemented separately from the navigation system to determine a two-dimensional position error estimate. In this separate processing system measured terrain data is correlated (in the frequency domain) with reference elevation stored in map format (as by way of a digital map generator (DMG)). The results of this correlation are then employed to enhance the independently operated dead reckoning navigation system so that an accurate determination of geographic position may be obtained.</p> |
申请公布号 |
CA1216918(A) |
申请公布日期 |
1987.01.20 |
申请号 |
CA19840457629 |
申请日期 |
1984.06.27 |
申请人 |
HARRIS CORPORATION |
发明人 |
CHAN, LUEN C.;SNYDER, FRANKLIN B. |
分类号 |
G01C21/00;(IPC1-7):G01S1/04;G06G7/70 |
主分类号 |
G01C21/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|