Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF radio communications. [1] ALE (Automatic Link Establishment) is based on government standards for automatically connecting HF radios. The protocol searches through available frequency bands and creates a channel that is appropriate for current band conditions.
TX and RX condition assessment for proposed FH automatic link
ALE is the acronym for Automatic Link Establishment. ALE is the de-facto worldwide standard for initiating and sustaining communications using High Frequency radio. HF radio conveys signals via ionospheric propagation, a constantly changing medium. The ION2G software brings HF Automatic Link Establishment (ALE) MIL-STD-188-141B to your computer with a familiar and easy to use interface. ION2G helps you stay connected to the people you need to communicate with across thousands of miles without dependence on infrastructure. Automatic Link Establishment ( ALE) is the principle where a specialized radio modem, known as an ALE adaptive controller, is assigned the task of automatically controlling an HF receiver and transmitter in order to establish the highest quality communication link with 1 or multiple HF radio stations. Automatic link establishment (ALE) was developed to automatically select a frequency that will support automatic linking between stations in a network or point-to-point communication without operator assistance. This new technology has given HF radio a renewed sense of being.
Proposed waveform for automatic link establishment Download
Automatic Link Establishment, 2G ALE (Official designation MIL-STD-188-141A and/or MIL-STD-188-141B (Appendix A)) is the current standardized method of establishing connections between radio operators. Also known as FED-STD 1045, FED-STD 1049, and STANAG 5066. Automatic Link Establishment (ALE) was developed to provide for establishing best quality high frequency communications without the need for consulting propagation forecast information, or the need of having training to interpret propagation forecast information. AUTOMATIC LINK ESTABLISHMENT 3.1 Introduction and overview of automatic link establishment systems The United States has developed a series of HF radio standards that characterize and specify protocols and parameters for automatic link establishment (ALE), networking, linking protection, high-speed data modems, and basic HF radio parameters. Automatic link establishment (ALE) is one of the important technologies in HF communication. One of the indicators to measure the performance of an ALE system is the linking time, which includes channel switching, spectrum sensing, and trying to call three periods. Asynchronous mode has been widely used for its simple operation. When establishing an link, the station sorts all the channels and.
GD upgrading Navy shipboard radio with HF automatic link establishment
This paper examines existing automatic link establishment (ALE) techniques for high frequency (HF) radio systems, identifying areas of improvement in calling techniques and protocols for ALE. Automated HF radio systems improved in these areas have been implemented, and results of these implementations are presented. Compromises between link establishment time and reliability are also considered. What is ALE? Automatic Link Establishment, usually abbreviated ALE, is a standard for digitally initiating and sustaining radio communications on HF.
Automatic Link Establishment (ALE) is crucial to channel assignment and data exchange in HF radio networks. The link establishment interval and quality are two main concerns in this context. In jamming environments, the jammer signals seriously influence the channel quality. Home High Frequency (HF) Radio Automated Link Establishment (ALE) Award Information Agency: Department of Defense Branch: Navy Contract: N00039-03-C-0056 Agency Tracking Number: N031-0063 Amount: $69,930.00 Phase: Phase I Program: SBIR Solicitation Topic Code: N/A Solicitation Number: N/A Timeline Solicitation Year: N/A Award Year: 2003
ALEAutomatic Link Establishment(2G)
AUTOMATIC LINK ESTABLISHMENT Third-generation ALE (3G-ALE) is designed to quickly and efficiently establish one-to-one and one-to-many (both broadcast and multicast) links. It uses a specialized carrier-sense-multiple-access (CSMA) scheme to share calling channels, and monitors traffic channels prior to using them to avoid interference. Scanning Automatic Link Establishment (ALE) is a technology that takes the guesswork out of choosing the best frequency to use to contact a specific station. Stations on an ALE network periodically send out a signal that identifies the station. This is called sounding.
