2a253 Volume 3 CDC

Triangulation is the process of determining the location of an object by measuring angles to it from two or more reference points. In the context of direction measurements, taking measurements from more than one source allows for triangulation, as it involves using multiple reference points to determine the direction of the object. This method is commonly used in navigation, surveying, and astronomy to determine the position or direction of objects.

The correct answer is b. electromagnetic hardening. Electromagnetic hardening refers to the processes and actions taken to protect equipment from the effects of an electromagnetic pulse (EMP) produced by an atomic blast. This can involve shielding the equipment, using surge protectors, and implementing other measures to ensure that the equipment remains functional in the event of an EMP.

Emission control is important because it limits incidental or accidental emissions. This means that by implementing emission control measures, the release of pollutants into the environment can be reduced or prevented. This is crucial for protecting human health, as well as the health of ecosystems and the planet as a whole. By limiting incidental or accidental emissions, we can work towards creating a cleaner and more sustainable environment.

The correct answer is a. A scope. A scope is a radar display indicator that displays range or velocity. It provides a visual representation of the radar data, showing the distance or speed of detected objects. The A scope is typically used for displaying range information, while the B scope is used for displaying velocity information. Range height and plan position are not radar display indicators that specifically display range or velocity.

Directional electromagnetic jamming focuses all of the jamming energy in one particular area. This type of jamming is used to disrupt or disable specific targets within a larger area, rather than affecting a broad range of targets. It allows for precise targeting and can be used to effectively disrupt enemy communications or radar systems.

The F-16CJ is used to perform the Wild Weasel mission. The Wild Weasel mission involves suppressing enemy air defenses by locating and destroying surface-to-air missile sites. The F-16CJ is equipped with advanced electronic warfare systems and can carry anti-radiation missiles to target and neutralize enemy air defense systems. The other options (EA-6B, EF-111, and F/A-18) are also capable of performing electronic warfare missions, but the F-16CJ is specifically designed for the Wild Weasel mission.

The interface control unit is responsible for selecting the mode of operation in the RWR. It controls the communication between different components and allows the user to switch between different modes. The scope provides visual display, the signal processor processes the received signals, and the receiver/amplifier amplifies the signals, but none of these components are responsible for selecting the mode of operation.

Flares are used to counter infrared missiles. Infrared missiles use heat-seeking technology to track and target aircraft. Flares are small, heat-emitting devices that can be deployed from an aircraft to divert the attention of the missile away from the aircraft's heat signature. When the flare is released, it produces a bright light and heat source that attracts the missile, causing it to veer off course and miss its intended target. This countermeasure is effective in confusing and distracting infrared missiles, providing a means of defense for aircraft.

To defeat infrared threats effectively, an important tactic that must be performed with flare deployment is an evasive maneuver. This involves maneuvering the aircraft in a way that makes it difficult for the infrared-guided missiles to track and hit the aircraft. By performing evasive maneuvers, the aircraft can change its direction, speed, and altitude, making it harder for the missiles to accurately lock onto the aircraft and increasing the chances of evading the threat.

A digital multi-meter is the most commonly used wiring diagnostic tool for identifying if a circuit is open or closed. This tool measures voltage, current, and resistance, allowing technicians to test the continuity of a circuit and determine if it is functioning properly. It can easily detect if a circuit is open (broken) or closed (complete), making it an essential tool for troubleshooting electrical systems.

Test probes are connected to a digital multi-meter for taking measurements. Test probes are used to make electrical connections between the circuit being measured and the multi-meter. They typically have a pointed tip for probing into the circuit and a connector that plugs into the multi-meter. By connecting the test probes to the appropriate points in the circuit, the multi-meter can measure various electrical quantities such as voltage, current, and resistance.

The requirement for a radar noise jamming transmitter does not include low cost. The other options, such as standardization, ease of operation, and continuous transmission, are considered important requirements for a radar noise jamming transmitter.

Modulation is the process of altering a carrier wave in accordance with a signal voltage. This allows the signal to be transmitted over long distances and received by a receiver. Deviation refers to the difference between the highest and lowest frequency of a modulated wave, deception is not related to altering a carrier wave, and amplification refers to increasing the amplitude of a signal. Therefore, the correct answer is c. modulation.

The most permanent effective means of denying the enemy the use of the electromagnetic spectrum is destruction. This means completely destroying the enemy's equipment or infrastructure that allows them to utilize the electromagnetic spectrum. By doing so, the enemy will no longer have the ability to communicate or gather information through the use of electronic devices, effectively denying them the use of the electromagnetic spectrum.

The power meter displays absolute power in either watts or dBm. dBm is a unit used to measure power levels in decibels relative to 1 milliwatt. It is commonly used in telecommunications and signal processing to express power ratios. The other options, dMb, Dm, and Dbm, are not valid units of measurement for power.

The RWR's antennas provide a range of coverage of 360°, meaning they can detect threats from all directions around the aircraft. This ensures that the aircraft is aware of any potential threats and can take appropriate action to avoid them.

Active MAWS (Missile Approach Warning System) emits electromagnetic signals to detect and track incoming missiles. One disadvantage of active MAWS is that it can be tracked by passive detection. Passive detection systems do not emit any signals, making them harder to detect and track compared to active systems. This puts active MAWS at a disadvantage as it can be easily identified and potentially targeted by enemy passive detection systems.

Thermal crossover refers to the point at which the temperature of land and water become equal. This means that both objects have the same temperature.

The correct answer is a. Insertion loss. The ratio of power out of a unit under test (UUT) to the power fed into the UUT is known as insertion loss. This test measures the amount of power loss that occurs when a component or device is inserted into a transmission line. It is commonly used to evaluate the performance of RF components such as filters, amplifiers, and connectors.

The countermeasures dispenser tester (CDT) functional check that measures the firing pulse amplitude and pulse duration is the "Fire" test. This test is used to ensure that the dispenser is able to properly release countermeasures in response to a threat. By measuring the firing pulse amplitude and pulse duration, the tester can verify that the dispenser is functioning correctly and will effectively deploy the countermeasures when needed.

The first step in EW (Electronic Warfare) that is essential to develop an accurate EOB (Electronic Order of Battle) is detection. Detection involves identifying and locating the enemy's electronic emissions, such as radar signals or communication transmissions. By detecting these emissions, the EW operator can gather information about the enemy's electronic capabilities and use it to develop an accurate EOB. This information is crucial for planning and executing effective electronic warfare operations.

The EC-140H is the correct answer because it is an aircraft specifically designed for electronic warfare and is used to jam the communications of the enemy's command and control (C2) network. The other options, E-6B, EF-111, and F-16CJ, are not primarily used for jamming communications.

ES data refers to electronic support data, which is information collected from electronic sources such as radars, communication systems, and electronic warfare systems. This data is used to produce various types of intelligence, including signal intelligence, electronic intelligence, and communications intelligence. However, it is not used to produce ballistic intelligence, which is the intelligence related to the trajectory, behavior, and characteristics of ballistic missiles or projectiles.

C2W, or Command and Control Warfare, is an approach used to disrupt and neutralize an adversary's command and control capabilities. It involves the integration of various tactics and strategies to achieve this goal. The correct answer, option d, includes all the key components of C2W. Electronic warfare is used to disrupt and degrade the adversary's electronic systems. Military deception is employed to mislead and confuse the adversary. Operational security is implemented to protect friendly operations and prevent the adversary from gaining information. Psychological operations are conducted to influence the adversary's decision-making process. Therefore, option d is the most comprehensive and accurate answer.

The correct answer is a. AGM-65. The AGM-65 missile uses an electro-optical or infrared imaging system to perform EA (Electronic Attack). This system allows the missile to track and engage targets using visual or heat signatures, making it effective against both air and ground targets. The AGM-88 and BDU-88 are not known for their electro-optical or infrared imaging systems, and the BDU-65 is not a missile at all.

Electronic attack involves weapons that use electromagnetic or directed energy as their primary destructive mechanism. This can include jamming enemy radar systems, disrupting communications, or disabling electronic devices. Electronic support refers to the collection and analysis of electronic signals for intelligence purposes. Electronic detection involves the identification and tracking of electronic signals. Electronic protection focuses on measures to defend against electronic attacks and ensure the security of electronic systems.

Area saturation is a chaff dispensing tactic that confuses radar operators with multiple false targets. By releasing a large amount of chaff in a specific area, the radar screen becomes cluttered with numerous blips, making it difficult for operators to distinguish between real targets and the false ones created by the chaff. This tactic is effective in diverting enemy radar-guided missiles or aircraft away from the actual target, providing a greater chance of survival for the aircraft deploying the chaff.

Using a modulated high intensity IR energy to break an IR missile's lock refers to the use of active infrared countermeasures. This involves emitting a strong infrared signal to interfere with the missile's infrared seeker, causing it to lose track of its target. This technique is an example of actively countering the missile's guidance system, rather than passively relying on the natural environment or deploying other defensive measures like flares or smoke.

The feature of a MAWS that relates to timeliness is the rapid identification of infrared missile threats. This means that the MAWS can quickly detect and identify incoming infrared missiles, allowing for timely response and countermeasures to be taken. This is important in order to minimize the potential damage and threat posed by these missiles. The other options, such as low false alarm rate, accurate threat positioning reporting, and multiple false targets due to maneuvers, do not directly relate to timeliness.

A nonlinear device is characterized by the fact that the current through the device is not proportional to the applied voltage. In other words, the relationship between current and voltage is not a straight line. This means that as the voltage changes, the current does not change in a linear manner. Nonlinear devices are commonly found in electronic circuits and can have complex behaviors and characteristics.

When performing heterodyning of two different RF signals, the output will contain the sum and difference frequencies of the two original signals, as well as the two original frequencies themselves. This is because heterodyning involves mixing two signals together, resulting in the creation of new frequencies that are the sum and difference of the original frequencies. Therefore, the correct answer is c. sum, difference, and two original frequencies.

The SA-2 SAM system in North Vietnam was devastating to our strike forces. This surface-to-air missile system, also known as the Guideline, was highly effective in shooting down American aircraft during the Vietnam War. It had a long range and was capable of reaching high altitudes, making it a significant threat to our strike forces. The SA-2 system played a major role in the air defense network of North Vietnam and caused significant losses to the US military.

The correct answer is d. antiaircraft artillery, early warning/ground controlled intercept, and SAM. This answer is correct because SEAD (Suppression of Enemy Air Defenses) targets include a range of radar systems that are used for acquisition, antiaircraft artillery, early warning/ground controlled intercept, and SAM (Surface-to-Air Missile) systems. SEAD missions aim to neutralize or destroy these various air defense systems to establish air superiority and allow friendly aircraft to operate effectively.

EW reconnaissance crews are called "Ravens" because they specialize in Electronic Warfare (EW) reconnaissance. The term "Ravens" is likely used to symbolize their ability to gather information and intelligence using electronic signals and communications, similar to how ravens are known for their intelligence and ability to gather information in the animal kingdom. The other options, such as "Crows," "Ferrets," and "Sparks," do not have any specific association with EW reconnaissance and are therefore incorrect.

Corridor operation is the chaff tactic that dispenses large quantities of chaff in a continuous ribbon. This tactic involves releasing chaff in a concentrated manner along a specific corridor, creating a dense cloud that can confuse enemy radar systems and make it difficult for them to track the aircraft. Area saturation involves dispersing chaff over a wide area, self-protection refers to the use of chaff to protect the aircraft from incoming threats, and preplanned burst involves releasing chaff in predetermined bursts to create a specific radar signature.

Towed decoys are designed to create a sufficient miss distance between the attacking missile and the aircraft. These decoys are attached to the aircraft by a cable and are towed behind, creating a separation between the aircraft and the decoy. This helps to divert the attention of the attacking missile away from the aircraft and towards the decoy, increasing the chances of the missile missing its target. Towed decoys are an effective countermeasure against missile threats and provide a valuable defense mechanism for aircraft.

Electronic support is the correct answer because it refers to the component that locates intentional and unintentional radiated electromagnetic energy for threat recognition. Electronic support systems are used to gather information about the electromagnetic spectrum, including detecting and identifying radar signals, communications signals, and other electronic emissions. This information is then used for threat recognition and analysis. Electronic attack, electronic protection, and electronic management are all different components of electronic warfare, but they do not specifically refer to the function of locating radiated electromagnetic energy for threat recognition.

The Emitter Library Module is classified as "Secret" when it contains a library. This means that the information stored in the module is considered to be highly sensitive and should only be accessed by individuals with the appropriate security clearance. The classification of "Secret" indicates that the information contained in the module could potentially cause serious damage if it were to be accessed or disclosed by unauthorized individuals.

The correct answer is d. annually. The common aircraft portable reprogramming equipment (CAPRE) needs to undergo visual inspection of its components once a year. This is necessary to ensure that all the components are in proper working condition and to identify any potential issues or damages that may affect the equipment's performance. Regular inspections help in maintaining the reliability and effectiveness of the CAPRE, allowing it to function optimally when needed.

The steps taken to locate intentional and unintentional emissions from radar equipment are described as electronic support. Electronic support involves identifying and analyzing electronic emissions to gather information about potential threats or to support friendly operations. It includes activities such as electronic surveillance, electronic reconnaissance, and electronic intelligence gathering. This helps in understanding the electronic environment and providing support to military operations.

The correct answer is d. Photoconductive. A photoconductive device is a type of IR detector that operates by changing its electrical conductivity when exposed to infrared radiation. To function properly, a bias current or voltage is required to provide the necessary electrical energy for the device to detect and respond to IR radiation. Photovoltaic devices convert light directly into electricity, photographic devices are used to capture images, and photoemissive devices emit electrons when exposed to light. None of these devices require a bias current or voltage to operate.

The C2 system, which stands for Command and Control system, is a crucial component in military operations. It involves the coordination and management of forces, assets, and resources. Among the options provided, the computer is an important part of the C2 system as it allows for data processing, communication, and decision-making. It enables commanders to gather information, analyze it, and make informed decisions in real-time. The computer helps in integrating and synchronizing various elements of the C2 system, ensuring effective command and control of military operations.

The distance to the discontinuity of a cable is determined by the reflected amplitude between the transmitted and reflected pulses. This is because when a signal is transmitted down a cable and encounters a discontinuity, a portion of the signal is reflected back towards the source. The amplitude of this reflected signal can be measured and analyzed to determine the distance to the discontinuity. By comparing the amplitude of the transmitted pulse with the amplitude of the reflected pulse, the location of the discontinuity can be determined.

The radio frequency transmission line test set (RFTLTS) is specifically designed to diagnose cable faults through voltage standing wave ratio (VSWR)/return loss measurements, as well as distance-to-fault measurements. The given answer, d. distance-to-fault measurements, accurately describes one of the main functions of the RFTLTS.

The correct answer is a. attack, electronic support, and electronic protection. Electronic warfare (EW) involves three major components: attack, electronic support, and electronic protection. Attack refers to the use of electronic systems to disrupt or disable enemy electronic systems. Electronic support involves gathering and analyzing electronic signals to gain information about enemy activities. Electronic protection involves measures taken to protect friendly electronic systems from enemy attacks.

The primary limitation of a towed decoy system is achieving 360° coverage. This means that the system may not be able to effectively protect the aircraft from threats coming from all directions. Other limitations mentioned in the options, such as separation between the decoy and the aircraft, the number of decoys that can be carried, and the time required for decoy deployment, are not mentioned as the primary limitation of the system.

A covert flare does not leave a visual signature such as smoke or flame. This means that it can be used without being easily detected by others. Kinematic, pyrotechnic, and conventional flares all have some form of visual signature, whether it be smoke or flame, making them more easily detectable. Therefore, the correct answer is a. Covert.

The correct answer is c. the first of the air defense weapon systems to pose a problem for an approaching force. This answer suggests that the AI has the capability to pose a threat to an approaching force before other air defense weapon systems.

AWACS stands for Airborne Warning and Control System. It is an advanced radar system mounted on an aircraft that provides detection and control of low-level aircraft beyond the coverage of ground-based radars. AWACS is able to detect and track aircraft at long ranges, providing valuable information for air defense operations. This system is commonly used by military forces to enhance their situational awareness and command and control capabilities in the air domain.

Each strip of chaff is a dipole reflector, which means it consists of two conductive elements separated by a small gap. When radar waves hit the chaff, they induce an electric current in the conductive elements, causing them to radiate electromagnetic waves. The length of each strip of chaff is designed to be one-half the wavelength of the radar's frequency. This length is chosen because it allows for efficient reflection and scattering of the radar waves, maximizing the effectiveness of the chaff as a countermeasure. Therefore, the correct answer is b. one-half the wavelength of the radar's frequency.