| Patents for G01C 21 - Navigation; Navigational instruments not provided for in groups (52,650) |
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| 06/16/1987 | US4673924 Maritime wind shift alarm system and method of detecting wind shifts |
| 06/16/1987 | US4673878 Vehicle location display device with averaging means for correcting location information |
| 06/16/1987 | EP0225493A2 Magnetic compass calibration |
| 06/16/1987 | CA1223070A1 Star sensor using ccd |
| 06/10/1987 | EP0224602A1 Method for rapidly calculating the attitude of vehicles with strapdown systems |
| 06/09/1987 | US4672563 Direction detection apparatus |
| 05/26/1987 | US4668954 Aircraft position determining system |
| 05/26/1987 | US4668858 Method and device for entering coordinates into an automatic navigation system for vehicles |
| 05/26/1987 | CA1222153A1 Inertial systems |
| 05/21/1987 | WO1987003083A1 Inertial measurement unit |
| 05/19/1987 | US4667203 Method and system for determining position using signals from satellites |
| 05/14/1987 | DE3643449A1 VOR radio navigation chart with direction-finding aids |
| 05/13/1987 | EP0221371A2 Freeze frame apparatus for moving map display system |
| 05/05/1987 | US4663719 For displaying a running position of an automobile |
| 05/05/1987 | US4663718 Display unit for trip computer |
| 05/05/1987 | US4663629 Fixed range indicating system for use in a vehicle travel path indicating apparatus |
| 04/29/1987 | EP0219930A2 Storing and searching a representation of topological structures |
| 04/29/1987 | EP0219680A1 Vehicle navigation device |
| 04/23/1987 | WO1987002468A1 Synchronous fm digital detector |
| 04/21/1987 | US4660037 Current location indication apparatus for use in an automotive vehicle |
| 04/15/1987 | EP0218273A1 Land vehicle navigation device comprising a filter unit for determining an optimum heading from presented orientation signals, and filter unit to be used in said navigation device |
| 04/15/1987 | EP0217852A1 Aircraft terrain closure warning system with descent rate based envelope modification. |
| 04/14/1987 | US4658431 Star sensor using CCD |
| 04/14/1987 | US4658361 Method and apparatus for determining satellite attitude by using star sensor |
| 04/07/1987 | US4656585 Aircraft flight data recorder data acquisition system |
| 04/01/1987 | EP0216571A2 Star scanner |
| 04/01/1987 | CN85107029A Positioning and message-transfering system employing satellites and stored topographic map |
| 03/25/1987 | EP0215176A1 Radio-electric distance-measuring method, gyroscopic navigation apparatus using this method, and its use in target designation |
| 03/25/1987 | EP0215116A1 Inertial reference system utilizing ring laser gyro data resynchronization |
| 03/25/1987 | EP0215115A1 Aircraft terrain warning system with configuration modified warning and improved mode switching. |
| 03/24/1987 | US4652884 Satellite navigational system and method |
| 03/18/1987 | EP0214272A1 Altitude loss after take-off warning system utilizing time and altitude. |
| 03/12/1987 | WO1987001442A1 Device for measuring the distance and direction of destinations on road maps |
| 03/12/1987 | WO1987001356A1 Ground proximity warning system for use with aircraft having degraded performance |
| 03/11/1987 | EP0213939A2 Mobile vehicle controller utilization of delayed absolute position data for guidance and navigation |
| 03/10/1987 | CA1219076A1 Automotive navigation system |
| 02/24/1987 | US4646244 Terrain advisory system |
| 02/24/1987 | US4646089 Travel guidance system for vehicles |
| 02/24/1987 | CA1218442A1 Position based ground proximity warning system for aircraft |
| 02/17/1987 | USRE32357 Moving body track indicator system |
| 02/12/1987 | EP0199780A4 Apparatus and method for displaying a map. |
| 02/10/1987 | US4642776 Automobile route information display |
| 02/10/1987 | US4642775 Airborne flight planning and information system |
| 02/03/1987 | US4640618 Phase conjugate relative position sensor |
| 01/29/1987 | WO1987000654A1 Precision platform pointing controller for a dual-spin spacecraft |
| 01/28/1987 | EP0124544B1 Method and device for guiding road vehicles |
| 01/27/1987 | US4639730 Excessive terrain closure warning system |
| 01/22/1987 | EP0193579A4 Excessive descent rate warning system for tactical aircraft. |
| 01/22/1987 | EP0090802A4 A page modification method in a printer subsystem of the partial page buffer composing type. |
| 01/20/1987 | US4638438 Navigation apparatus for automotive |
| 01/20/1987 | US4637143 Plotting device |
| 01/20/1987 | EP0190345A4 Ground proximity warning system for use with aircraft having degraded performance. |
| 01/20/1987 | CA1216918A1 System for correlation and recognition of terrain elevation |
| 01/06/1987 | US4635203 Passive range measurement apparatus and method |
| 01/06/1987 | US4635202 Navigation apparatus for automobile |
| 01/06/1987 | US4633710 Ship wave heading indication method and apparatus |
| 01/06/1987 | US4633709 Vehicle turn angle detecting device |
| 12/30/1986 | US4633407 Method and device for target tracking of land vehicles |
| 12/23/1986 | US4631678 Information input |
| 12/23/1986 | US4630900 System for introducing by reflection additional information into binoculars |
| 12/16/1986 | US4630209 Audio/visual display system for multiple maps |
| 12/16/1986 | US4630208 Identification of beacons |
| 12/16/1986 | US4630065 Current location indication apparatus for use in an automotive vehicle |
| 12/09/1986 | US4628456 Course guidance system |
| 12/04/1986 | WO1986007143A1 Navigation system for vehicles |
| 12/04/1986 | WO1986007142A1 Navigation process for vehicles |
| 11/18/1986 | US4622754 Automotive drive guide system with error monitor for a magnetic compass therein |
| 11/05/1986 | EP0200706A2 Control system for record changer apparatus |
| 11/05/1986 | EP0199780A1 Apparatus and method for displaying a map. |
| 11/04/1986 | US4621329 Star catalog navigation system |
| 10/21/1986 | US4618259 Star and sun sensor for attitude and position control |
| 10/15/1986 | EP0197321A2 Guidance system for a vehicle |
| 10/14/1986 | US4616423 Tactical dinghy compass |
| 10/08/1986 | EP0196498A2 Method for localising and for navigating a land vehicle |
| 10/01/1986 | EP0196179A2 Digital phase rotation of signals |
| 09/17/1986 | EP0194802A2 Apparatus for generating a heading signal for a land vehicle |
| 09/16/1986 | US4611491 Accelerometer system |
| 09/16/1986 | CA1211506A1 Borehole inertial guidance system |
| 09/15/1986 | EP0181370A4 Enclosure for an aircraft inertial reference unit. |
| 09/10/1986 | EP0193985A1 System for navigating a free ranging vehicle |
| 09/10/1986 | EP0193579A1 Excessive descent rate warning system for tactical aircraft |
| 09/04/1986 | EP0171424A4 Aircraft flight data recorder data acquisition system. |
| 09/02/1986 | US4609988 Automatic prediction and capture of a preselected altitude for aircraft |
| 08/28/1986 | WO1986005023A1 Aircraft terrain closure warning system with descent rate based envelope modification |
| 08/28/1986 | WO1986005022A1 Altitude loss after take-off warning system utilizing time and altitude |
| 08/28/1986 | WO1986005021A1 Aircraft terrain warning system with configuration modified warning and improved mode switching |
| 08/28/1986 | WO1986005017A1 Inertial reference system utilizing ring laser gyro data resynchronization |
| 08/28/1986 | WO1986004983A1 Configuration responsive descent rate warning system for aircraft |
| 08/26/1986 | US4608656 Road map display system with indication of a vehicle position |
| 08/26/1986 | US4608641 Determining the attitude of a body operating in a gravitational field |
| 08/20/1986 | EP0191022A1 Device for the acquisition of navigation data. |
| 08/13/1986 | EP0190345A1 Ground proximity warning system for use with aircraft having degraded performance. |
| 08/13/1986 | EP0190258A1 Surveying satellite incorporating star-sensing attitude determination subsystem |
| 07/31/1986 | WO1986004430A1 Navigation systems |
| 07/23/1986 | EP0187761A1 Process for correcting angular errors in an electronic compass in vehicles |
| 07/22/1986 | US4601206 Accelerometer system |
| 07/22/1986 | CA1208339A1 Stabilisation aid for a vehicle- or vessel-borne search unit |
| 07/02/1986 | CN85100786A Flow speed difference used in navigation technique |
| 06/18/1986 | EP0184632A2 Arrangement for initializing and/or recalibrating a repeating inertial navigator |
| 06/11/1986 | EP0183838A1 Inertial reference system |