Navigation assisting device
This disclosure provides a navigation assisting device, which includes a TT information acquiring module for acquiring target object data by performing target tracking based on an echo received by a radar antenna, an AIS information acquiring module for acquiring target object data based on a Universal Shipborne Automatic Identification System, a maximum-number-of-output-data determination module for determining a maximum number of output data that is the number of target object data that is outputable while the radar antenna revolves once, a priority determination module for performing a priority determination according to a predetermined rule, for the target object data acquired by the TT information acquiring module and the target object data acquired by the AIS information acquiring module, and an output control module for outputting the target object data fewer than the maximum number of output data according to the priorities while the radar antenna revolves once.
1. A navigation assisting device, comprising:
a TT information acquiring module for acquiring target object data by performing target tracking based on an echo received by a radar antenna;
an AIS information acquiring module for acquiring target object data based on a Universal Shipborne Automatic Identification System;
a maximum-number-of-output-data determination module for determining a maximum number of output data that is the number of target object data that is outputable while the radar antenna revolves once;
a priority determination module for performing a priority determination according to a predetermined rule, for the target object data acquired by the TT information acquiring module and the target object data acquired by the AIS information acquiring module; and
an output control module for outputting the target object data fewer than the maximum number of output data according to the priorities while the radar antenna revolves once.
2. The navigation assisting device of claim 1 , wherein the maximum-number- of-output-data determination module measures a revolving speed of the radar antenna, and calculates the maximum number of output data based on the revolving speed.
3. The navigation assisting device of claim 2 , wherein the target object data acquired by the TT information acquiring module is outputted with a higher priority.
4. The navigation assisting device of claim 2 , wherein the priority determination module updates the priorities for every predetermined priority updating cycle.
5. The navigation assisting device of claim 1 , wherein the target object data acquired by the TT information acquiring module is outputted with a higher priority.
6. The navigation assisting device of claim 5 , wherein the priority determination module updates the priorities for every predetermined priority updating cycle.
7. The navigation assisting device of claim 1 , wherein the priority determination module updates the priorities for every predetermined priority updating cycle.
8. The navigation assisting device of claim 7 , wherein the priority updating cycle is longer than the revolving cycle of the radar antenna.
9. A navigation assisting device, comprising:
a TT information acquiring module for acquiring target object data by performing target tracking based on an echo received by a radar antenna;
an AIS information acquiring module for acquiring target object data based on a Universal Shipborne Automatic Identification System;
a priority determination module for performing a priority determination according to a predetermined rule, for the target object data acquired by the TT information acquiring module and the target object data acquired by the AIS information acquiring module; and
an output control module for outputting the target object data;
wherein the output control module outputs the target object data sequentially from the target object data with the highest priority, until a rotation angle of the radar antenna reaches a second predetermined angle from a first predetermined angle.
10. The navigation assisting device of any one of claims 1 to 9 , wherein the priority determination module calculates at least one index, for each of the target object data acquired by the TT information acquiring module and the target object acquired by the AIS information acquiring module, the index related to a distance to a target object corresponding to the target object data, a speed of the target object, CPA, TCPA, BCR and BCT, and performs the priority determination based on the index.
11. The navigation assisting device of claim 10 , wherein the target object data acquired by the TT information acquiring module is outputted with a higher priority.
12. The navigation assisting device of claim 10 , wherein the priority determination module updates the priorities for every predetermined priority updating cycle.
13. The navigation assisting device of claim 9 , wherein the target object data acquired by the TT information acquiring module is outputted with a higher priority.
14. The navigation assisting device of claim 9 , wherein the priority determination module updates the priorities for every predetermined priority updating cycle.