| 摘要 |
<p>Navigation system and method for navigation by means of a route (30) comprising the steps:
- retrieving map data (125) of a map section (20) from a database (120), wherein the map data (125) have polygonal chains (10 A , 10 B , 10 C , 10 D ), wherein each polygonal chain (10 A , 10 B , 10 C , 10 D ) has vertices ({A 1 ... A 8 }, {B 1 ... B 5 }, {C 1 ... C 5 }, {D 1 ... D 12 }) and segments ({S A12 ... S A78 }, {S B12 ... S B45 }, {S C12 ... S C45 }, {S 12 ... S 1112 }),
- determining a value of a parameter (L, V L , ² S , ² M , V ² , Y S , Y M ) of a geometric property of the polygonal chains (10 A , 10 B , 10 C , 10 D ) for each of a plurality of polygonal chains (10 A , 10 B , 10 C , 10 D ) of ways of the map section (20) by means of a computing unit (110),
- determining a first number (M) of polygonal chains (10 B ) and a second number (N) of polygonal chains (10 A , 10 C ) by means of the computing unit (110) from the map data (125) by evaluation of the values of the parameter (L, V L , ² S , ² M , V ² , Y S , Y M ), and
- assigning first segments ({S B12 ... S B45 }) of the polygonal chains (10 B ) of the first number (M) a first rank (R=2) and assigning second segments ({S A12 ... S A78 }, {S C12 ... S C45 }) of the polygonal chains (10A, 10C) of the second number (N) a second rank (R=1) by means of the computing unit (110), wherein the first segments ({S B12 ... S B45 }) have priority over the second segments ({S A12 ... S A78 }, {S C12 ... S C45 }) for determining the route (30).</p> |
