Abstract:
A method for detecting the presence of a deception signal associated with a satellite navigation system. The deception signal has certain “observables”, which can be used by a GPS receiver to detect the presence of the deception signal.
Abstract:
Embodiments of the present invention provide a method to produce a modulation signal comprising combining at least two modulation signals, for example, BOCs or derivatives thereof, having portions (chip or a number of chips) thereof with respective relative phases or states ({++, −} and {+−, −+}) selected such that the average of a plurality of said portions at least reduces cross spectral terms of the composite complex spectrum of said at least two modulation signals.
Abstract:
A system for exchanging GPS or other position data between wireless devices for purposes of group activities, child location monitoring, work group coordination, dispatching of employees etc. Cell phones and other wireless devices with GPS receivers have loaded therein a Buddy Watch application and a TalkControl application. The Buddy Watch application communicates with the GPS receiver and other wireless devices operated by buddies registered in the users phone as part of buddy groups or individually. GPS position data and historical GPS position data can be exchanged between cell phones of buddies and instant buddies such as tow truck drivers via a buddy watch server. Emergency monitoring services can be set up with notifications to programmable individuals in case an individual does not respond. Positions and tracks can be displayed. TalkControl simplifies and automates the process of joining talk groups for walkie talkie services such as that provided by Nextel.
Abstract:
A privacy enhancement device for electronic device such as a cellular telephone. The privacy enhancement device may include a jammer which may produces false information, e.g. false information indicative of pseudo ranges. In addition, the navigation information used on the position detecting device may be locally stored versions of dynamically changing information. The navigation operation may be carried out using a Web service.
Abstract:
A privacy enhancement device for electronic device such as a cellular telephone. The privacy enhancement device may include a jammer which may produces false information, e.g. false information indicative of pseudo ranges. In addition, the navigation information used on the position detecting device may be locally stored versions of dynamically changing information. The navigation operation may be carried out using a Web service.
Abstract:
A privacy enhancement device for electronic device such as a cellular telephone. The privacy enhancement device may include a jammer which may produces false information, e.g. false information indicative of pseudo ranges. In addition, the navigation information used on the position detecting device may be locally stored versions of dynamically changing information. The navigation operation may be carried out using a Web service.
Abstract:
A privacy enhancement device for electronic device such as a cellular telephone. The privacy enhancement device may include a jammer which may produces false information, e.g. false information indicative of pseudo ranges. In addition, the navigation information used on the position detecting device may be locally stored versions of dynamically changing information. The navigation operation may be carried out using a Web service.
Abstract:
A method for executing user navigational events triggered through geolocational data describing zones of influence is provided. Data is stored in a cartridge script loadable into a user device. Zones of influence are defined by describing by points of static geolocational data. User navigational events are defined and each user event is associated with a zone of influence. A trigger condition is specified for each user event based on the static data for the associated zone of influence. A scenario is executed by triggering the user events stored on the cartridge script through movement of the user device. A location of the user device is continuously self-identified based on dynamic geolocational data determined in response to the movement. A correlation between the dynamic data and the static data for the zones of influence is determined. The user event associated with a trigger condition is locally triggered based on the correlation.
Abstract:
Systems and methods for interplanetary space navigation are provided. In one embodiment, a system for navigating a spacecraft in outer space is provided. The system comprises means for broadcasting navigation signals to a spacecraft traveling in outer space, each navigation signal comprising a spread-spectrum signal that includes information on the location of the means for broadcasting navigation signals, the time the navigation signal was transmitted and a reference frame identifier; means for receiving the navigation signals transmitted from the means for broadcasting navigation signals; and means for determining one or more ranges and delta-ranges between the means for receiving and the means for broadcasting based on the navigation signals using time-of-arrival (TOA) techniques; means for calculating a position of the spacecraft in space based on the one or more ranges; and means for calculating a velocity of the spacecraft in space based on the one or more delta-ranges.
Abstract:
A GPS antenna is arranged such that it can easily receive satellite radio waves. An ATV vehicle equipped with a navigation system for measuring the position of the vehicle by receiving radio waves from an artificial satellite. A meter box is mounted to a steering handle of the ATV vehicle, and a GPS unit and a GPS antenna mounted inside the meter box. A second GPS antenna is mounted to a rear fender to enable diversity of reception.