摘要:
A system and methods for generating alerts in a terrain awareness and warning system (“TAWS”) in an aircraft, using data acquired from a forward-looking radar The system comprises a forward-looking imaging device, an airport database, a navigation system, a forward-looking terrain alert (“FLTA”) processor, and a crew alerting system. The FLTA processor determines a measured clearance altitude of a highest cell within an area and compares it with a required minimum clearance altitude; if the measured altitude is equal or less than the required altitude, the crew is alerted. Alternatively, a terrain database may be used. with the FLTA processor for determining if the aircraft descends below the minimum operating altitude or is predicted to do so and then generating an alert. A method is disclosed for generating TAWS alerts using elevation angle measured by the forward-looking radar and terrain data retrieved from a terrain database.
摘要:
A terrain awareness and warning system includes electronics for receiving radar returns and providing terrain and/or obstacle alerts or warnings in response to the radar returns. The electronics receives information from a database and the information is utilized to suppress false alerts or warnings.
摘要:
A terrain awareness and warning system (“TAWS”) provides input to a terrain alert (“TA”) processor from at least one real-time aircraft system or sensor and a source of terrain data; the processor determines a terrain clearance surface and a terrain airspace alert surface, and if one surface penetrates the other, the processor generates an alert signal and provides an alert signal to a crew alerting system. The two surfaces are determined by the processor by executing an algorithm(s) embedded in software containing the disclosed embodiments and methods. At least one criterion used to define an aircraft terrain alert surface is programmed to include real-time and/or static input factor data provided by at least one system or sensor input from an aircraft. Such input factor could be used to define a terrain clearance surface.
摘要:
A terrain awareness system includes a processor for receiving radar returns and providing terrain and/or obstacle alerts or warnings in response to the radar returns. The processor receives information from a database and the information is used to select the radar transmit function and/or the radar reception function to optimize the performance of the system.
摘要:
A present novel and non-trivial system, module, and method for presenting clearance-dependent advisory information in an aircraft is disclosed. Clearances include those corresponding to interval management operations and/or trajectory management operations. Data representative of clearance information including data representative of an actual controller intervention threshold (“CIT”) information, ownship information, target information, and alert parameter(s) information is received. The actual CIT information is comprised of the CIT of a clearance assigned to an aircraft and/or an designator from which the CIT of the assigned clearance is determined. A dynamic alerting threshold is determined as a function of the received information. If the ownship position meets or exceeds the alerting threshold, an advisory data set comprised of visual advisory information, aural advisory information, and/or tactile advisory information is generated and provided a presentation system in which advisory and/or alert information is presented by an applicable unit of the presentation system.
摘要:
The present invention is a high availability digital radio architecture which includes an analog interface subsystem and a baseband digital processing subsystem. The analog interface subsystem includes an antenna switching network and a digital antenna group translator. The translator includes a set of analog and digital building blocks for each communication, navigation and surveillance (CNS) waveform. The set of blocks includes a receive signal processing chain and/or a transmit signal processing chain with digital interfaces to a multi-channel transceiver. The switching network provides connectivity between antennas and the translator. The baseband digital processing system includes a network switch and said multi-channel transceiver. The transceiver includes a digital modem and protocol processing components for implementing behavior of each CNS waveform. The network switch is communicatively coupled to said translator and to said transceiver and provides interconnection between said translator and individual channels in said baseband digital processing subsystem.
摘要:
An avionics system including a software defined radio (SDR) is provided. The SDR includes configurable avionics function implementation circuitry configured to implement each of multiple avionics functions. Also included in the SDR is a priority arbitrator. The priority arbitrator is configured to receive priority control parameters and, based on a make-up of the received priority control parameters, responsively direct the configurable avionics function implementation circuitry to implement a particular priority-based subset (less than all) of the multiple avionics functions.
摘要:
A software defined radio system is described. The software defined radio comprises a modem bank at least partially defined by software running on a processor. The software defined radio also comprises an antenna group translator coupled to the modem bank. The software defined radio also comprises at least one antenna coupled to the antenna group translator. Further, the software defined radio comprises a program stored in a memory and running on the processor. The program is configured to generate a test signal to be leaked by the first of the at least two channels and to be received by the second of the two channels. The program is configured to automatically and autonomously verify the availability of a function of one of the at least two channels and determine the integrity of the function of the one of the at least two channels.
摘要:
An improved architectural approach for implementation of a low power, scalable topology for a software defined radio (SDR). Low power processors and switching elements forming building blocks are employed in an embedded switched fabric architecture network having a repeating building block topology that advantageously employs wormhole routing and has self-healing, fail-safe properties. Differential signaling is used and data rates in excess of 250 Mbps are possible. In one embodiment a dual civilian and military channel SDR is disclosed; in other embodiments, a plurality of independent SDR channels, with or without encryption, are disclosed. A plurality of different topologies are disclosed including torodial topologies having a planar topology with orthogonal connections, a planar topology with orthogonal and diagonal connections, and a cube topology with both orthogonal and/or diagonal connections.
摘要:
The present invention is a method and system for managing a transmitter located in close proximity to a sensitive receiver. In an exemplary embodiment, the method may include recognizing incomplete receive operations on frequencies that may be affected by co-site transmit operations. Further, the method may include detecting the beginning of a speech message and delaying the speech message up to a selected maximum amount of time. The speech message may be delayed to correspond to required communications performance, allowing receive and transmit operations to be coordinated and thus, reducing the possibility of the receiver to be interrupted or affected by the transmitter operating on a relatively nearby frequency.