Abstract: A computer-implemented method for generating a hierarchical set of certifiers nodes for a public key infrastructure within an ad-hoc network. The method includes determining at least one potential certifier node that is eligible to become certifier nodes from a set of nodes in an ad-hoc network, creating a new certifier node from the at least one potential certifier node based on a selection criteria, and creating a parent-child relationship with the new certifier node.

Abstract: A method of displaying flight management system (FMS) data, and an avionics system configured to implement the method, are provided. The method includes the step of providing FMS route data. The method also includes the step of using the FMS route data to display an FMS intent strip which represents current maneuvering intent of the FMS.

Abstract: Presently disclosed are a method and apparatus for generating graphics in a protected manner by establishing a user graphics partition while in an executive context. Once the user context is established, an operating mode is switched to the user context and then executing a user graphics program while in the user context. The operating mode then reverts to the executive context when the user context expires.

Abstract: A method for dynamically implementing a TDMA management cycle for a wireless network is described. The method includes communicating between nodes in the wireless network using a time division multiple access structure, the time division multiple access structure including time divisions having time frames, each time frame having a plurality of time slots, the plurality of time slots including TDMA management slots. The method further includes defining a node partition, the node partition including all of the nodes within the wireless network that are able to route messages to each other, defining a TDMA management cycle, the TDMA management cycle configured to include a TDMA management slot assigned to every node within the partition, storing, at each node, an assignment of the node to a TDMA management slot number, and dynamically adapting the size of the TDMA management cycle based on the number of active nodes in the partition, wherein the size of the TDMA management cycle is a multiple of a base cycle.

Abstract: An integrity monitoring method for an aircraft is disclosed. The integrity monitoring method includes determining a set of non-uniform weights. The non-uniform weights are based on a least squares approximation of a linearized measurement equation. The integrity monitoring method also includes applying the non-uniform weights in a receiver autonomous integrity monitoring (RAIM) system. Further, the integrity monitoring method includes determining a reduced integrity limit based on the output of the RAIM system.

Abstract: An incursion detection system can be utilized with an aircraft. The incursion detection system can be utilized to determine a possible presence of obstacles associated with a runway, taxi-way, or other path of an aircraft. The incursion detection system preferably utilizes a sensor, such as a radar system, and a signal received on a wireless receiver. The wireless receiver can be part of an ADS-B system. A processing device determines a presence of at least one obstacle in a path based upon first data derived from the wireless receiver and/or second data received from the sensor.

Abstract: A method for method of estimating the position of one or more target nodes based on received reflections of a primary signal. The method includes receiving a primary signal from a transmitter node having a known location at a receiver node having a known location and receiving at least one reflected signal at the receiver node, the reflected signal generated by a reflection of the primary signal by a target node having an unknown location. The method further includes applying a target position algorithm to the primary signal and the at least one reflected signal to generate target location information.

Abstract: The present invention is a flight deck system for promoting accurate navigation of an aircraft. The system includes a memory configured for storing position information for the aircraft. The system further includes a processor which is configured for being communicatively coupled with the memory, the processor also being configured for receiving the aircraft position information stored in the memory. The system also includes a display which is configured for being communicatively coupled with the processor. The display is further configured for displaying a scaled indicator, the scaled indicator having been output to the display by the processor, the scaled indicator being based upon the received aircraft position information.

Abstract: A public safety communications network uses asymmetric channels for receiving requests for data from a mobile client over a narrowband land mobile radio system (LMRS) channel and delivering wideband data over a digital television (DTV) network channel to a DTV datacast receiver with the mobile client. An emergency operations center connected to the LMRS receives and processes the data requests and forwards the requested data. DTV network stations have a data multiplex insertion system for inserting the requested data into a DTV signal. The DTV network may be a public television network. An addressing system identifies unique mobile client addresses and unique mobile client group addresses and selects a DTV transmitter for delivering response messages in accordance with the addresses. A forward error correction (FEC) regulation system is used in transmitting requested data with FEC strength regulated as a function of historical bit-error-rate or receive power for a geographical location.

Abstract: The present invention is a system and a method for extending multiple independent levels of security to a plurality of input/output buses and components connected to the buses. In an exemplary embodiment, the system may include a processing unit suitable for operation in a plurality of security level. A bus controller including security control logic may be coupled to the processing unit for restricting access and flow of information between the physical memory and the plurality of buses. The bus controller may employ base address registers to allocate and map the physical memory to control which partitions of the physical memory are accessible to each of the plurality of buses and thus, a device connected to at least one of the plurality of buses.

Abstract: The present invention is a wireless communication system and method. In an exemplary embodiment, the wireless communication system includes a destination system and a source network. The source network provides network services to the destination system. Further, a plurality of mobile nodes are communicatively coupled with each other for allowing data packets to be transferred between the source network and the destination system. In addition, at least one firewall is communicatively coupled with the destination system and at least one of the mobile nodes included within the plurality of mobile nodes for monitoring data packet exchange between the source network and the destination system. The at least one firewall utilizes at least location as a controlling parameter for regulating data packet exchange as the at least one mobile end node moves into areas associated with varying degrees of threat.

Abstract: Techniques and systems for driving multiple tiled displays from a single digital video source can include a plurality of displays arranged in tiled fashion to form a tiled display, a plurality of display drivers corresponding to the plurality of displays, and a video receiver board coupled to the plurality of display drivers via a communication bus. The video receiver board communicates streams of pixel information to the plurality of display drivers.

Abstract: A method and apparatus for receiving geolocation signals wherein the geolocation signals are received by receiving a plurality of perspectives of a geolocation signal and a jamming signal; generating a plurality of wavelet transformations corresponding to the plurality of perspectives; determining a covariance between corresponding elements in the plurality of wavelet transformations; weighting each element in each wavelet transformation by weights derived from the determined covariance; generating a nulled wavelet transformation by summing together corresponding weighted elements from each of the plurality of wavelet transformations; and generating a time-domain rendition of the geolocation signal according to the nulled wavelet transformation through use of the inverse wavelet transform.

Abstract: A system and method for communicating with a processing element in a CORBA (Common Object Request Broker Architecture) system does not use an ORB (object request broker) in the processing element. A CORBA location is assigned to the processing element with a host loader and stored in a memory in the processing element. Addresses of CORBA objects are acquired with the host loader and loaded in the memory. The processing element communicates with the CORBA objects using CORBA object addresses. The CORBA objects communicate with the processing element using the assigned CORBA location of the processing element. Data is loaded into the processing element with the host loader.

Abstract: In one aspect, the flight display system comprises a navigation map that includes a time window for a required time of arrival (RTA) waypoint. The time window has a proximal end indicating the aircraft's position at the RTA using a defined lowest speed and a distal end indicating the aircraft's position at the RTA using a defined highest speed. In another aspect, a pop-up time map displays flight plan waypoints mapped out along a time line adjacent to a plurality of time markers. The waypoint scrolls along the time line during flight. In another aspect, the flight display system includes a full format time map for displaying at least one flight plan waypoint mapped out along a time line adjacent to a plurality of time markers.

Abstract: A method for displaying a runway incursion for an aircraft includes electronically gathering traffic information data from a traffic information system, employing a runway incursion algorithm to the traffic information data to detect a collision hazard, automatically calculating incursion data, and displaying the incursion data. A runway incursion detection system has a display unit, a computer and a software product that enables methodology herein.

Abstract: A radio frequency receiver includes a receiving circuit for receiving and decoding an incoming radio frequency signal including a correlation signal. The receiver also includes a timing estimation circuit. The timing estimation circuit comprises a signal buffer receiving a plurality of correlation signal segments, and a first peak detection and Doppler estimation circuit for determining a first timing of a first segment and the associated first Doppler shift. The timing estimation circuit also comprises a memory coupled to the signal buffer, the memory receiving a plurality of segment correlation metrics, and a second peak detection and Doppler estimation circuit for determining a second timing of a second segment and the associated second Doppler shift.

Abstract: A GPS receiver employing advanced spoofer mitigation, geolocation and tracking capabilities through the use of a utility channel coupled in parallel to a tracking channel. The tracking channel tracks the direct signal while the utility channel tracks one or more spoofer signals. A signal from the primary channel is used by the utility channel to locate spoofer signals, with the primary channel operating independently of the utility channel. Three complementary spoofer mitigation methods are disclosed for identifying advanced repeaters and security-compromised spoofers, which may also be used for geolocation of such spoofers: (1) the consistency routine; (2) the nuller routine; and (3) the multiple antennas routine. An improved architecture is disclosed to allow easy upgrading and retrofitting of an existing GPS receiver.

Abstract: A method of data compression for compressing a web page with graphics files, text files, JAVA scripts, and HTML files comprises storing the graphics files, the text files, the JAVA scripts, and the HTML files in a temporary directory. The graphics files are sorted into lossless and lossy file groups. The lossy files, the lossless files, the text files, the JAVA scripts, and the HTML files are concatenating and then compressed to yield a compressed web page. The lossy files may be de-featured and transcoded before concatenation. The lossless files may be subsampled or decimated before concatenation to match client display size. Lossy files may be de-featured to match client display size by subsampling and reducing image fidelity. Optimal file concatenation size range is determined to optimally develop compression performance while minimizing latency. The concatenated file size is regulated to the optimal file concatenation size.

Abstract: The present invention is a radio communications system. The system includes a first Line-Replaceable Unit (LRU) and a second Line-Replaceable Unit (LRU). Each LRU includes two transmitters, a multi-channel receiver, a passive hybrid combiner-splitter, and a bypass relay. The first LRU and the second LRU are communicatively coupled via a crosslink connection, such as a coax cable connection. The system includes first and second antennas, which are communicatively coupled with the first and second LRUs respectively. The system includes a crosslink bus configured for communicatively coupling the first and second LRUs, thereby allowing the LRUs to coordinate operation of the relays via the crosslink bus. Still further, the system is configured for providing concurrent transmit and receive operation.