Navstar (Navigation System with Timing and Ranging) is the official name for the Global Positioning System (GPS) developed by the United States Department of Defense. It consists of a constellation of satellites that transmit precise timing and location signals, allowing receivers on Earth to determine their exact geographical coordinates and time anywhere on the planet.

A standard computer-based information system is generally composed of five essential components: hardware, software, data, procedures, and people. These elements work in concert to collect, process, store, and distribute information to support decision-making and control within an organization.

To achieve global coverage, a minimum of three satellites in geostationary orbit is theoretically required. Each satellite can cover approximately one-third of the Earth's surface, allowing for continuous communication links across the globe when positioned correctly at 120-degree intervals along the equator.

Electronic mail, or e-mail, is a method of exchanging digital messages between people using electronic devices. It was one of the first services to be implemented on the internet and remains a primary tool for fast, asynchronous communication. Unlike web browsing, which is for information retrieval, e-mail is specifically designed for messaging.

Global Positioning System (GPS) devices in automobiles receive signals from a constellation of satellites orbiting the Earth. By calculating the time delay of signals from multiple satellites, the receiver determines its precise geographic coordinates. While these signals are technically in the microwave radio frequency range, the system is classified as satellite-based communication.

In the context of information systems, procedures refer to the documented rules, instructions, and policies that dictate how the system is designed, maintained, and utilized by users to achieve specific organizational objectives effectively.

Remote-sensing devices often utilize infrared radiation because it is sensitive to thermal signatures. Infrared sensors detect heat emitted by objects, allowing for imaging and data collection in various environmental, military, and industrial applications, even in low-light conditions.

A hard disk drive (HDD) is a data storage device that uses magnetic storage to store and retrieve digital information using one or more rapidly rotating rigid platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces.

RADAR (Radio Detection and Ranging) is an electromagnetic system used to detect, locate, and track objects like aircraft, ships, and vehicles. It functions by emitting radio waves that reflect off a target; by measuring the time delay and frequency shift of the returning echo, the system calculates the distance, speed, and position of the object relative to the transmitter.

The flight data recorder (FDR) and cockpit voice recorder (CVR) are essential instruments used in aviation to capture flight parameters and audio communications. Although they are painted bright orange to facilitate recovery after an accident, they are colloquially known as 'black boxes.' These devices provide critical data for investigators to determine the causes of aviation incidents and improve future safety standards.