Term
| What is a disadvantage of a Search Radar? |
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Definition
| It does not have a fire control solution. |
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Term
| What are the disadvantages of a Fire Control Radar? |
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Definition
| The target knows it is being tracked, The target can initiate EA or EP, and The target can use weapons that home in on the radar (HARM missile). |
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Term
| What does TWS stand for and what is it? |
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Definition
| Track While Scan, it is a search radar that can solve fire control problems. |
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Term
| What are the two purposes of RADAR? |
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Definition
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Term
| What are the six basic functions of TWS? |
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Definition
| 1-Target detection, 2-Target track correlation and association, 3-Target track initiation and track file generation (if a new target), 4-Generation of tracking “Gates”, 5-Track gate prediction, smoothing and positioning, 6-Display and future target calculations |
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Term
| What are the three types of gates TWS generates? |
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Definition
| Acquisition gate, Tracking gate, and Turning gate. |
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Term
| What are the advantages of the TWS radar system? |
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Definition
| You can Scan and Track on same radar and tracking information is used for computation of a fire control solution immediately. |
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Term
| Why did the Navy create the TWS system? |
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Definition
| To have a system that could utilize the greatest number of advantages. |
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Term
| What are the 2 types of control systems? |
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Definition
| Open loop and closed loop. |
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Term
| What is an open loop conrtol system? |
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Definition
| A simple control system which performs its function without concerns for initial conditions or external inputs, and must be closely monitored. |
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Term
| What is a closed loop conrtol system? |
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Definition
| A system that uses the output of the process to modify the process to produce the desired result and continuously adjusts the process. |
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Term
| What are the advantages of a closed-loop feedback system? |
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Definition
| Increased Accuracy, Reduced Sensitivity to Disturbance, Smoothing and Filtering, and Increased Bandwidth. |
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Term
| What are the major types of feedbacks the closed loop system uses? |
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Definition
| Position Feedback and Rate & Acceleration Feedback. |
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Term
| What are the 5 basic functions of an Angle-Tracking Servo System? |
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Definition
| 1-Sense position error magnitude and direction, 2-Provide position feedback, 3-Provide data smoothing / stabilization, 4-Provide velocity feedback, 5-Provide a power-driving device. |
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Term
| What are some systems that use Angle-Tracking Servo Systems? |
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Definition
| Monotrack fire control radars, homing missiles, acoustic homing torpedoes, and aviation fire control tracking systems. |
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Term
| What are the methods of tracking for the Angle Tracking Servo System? |
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Definition
| Sequential Lobing, conical scan, conical scan on receive only (COSRO), and monopulse. |
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Term
| What is the basic principle of Position Error Magnitude & Direction? |
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Definition
Energy return from a target will be strongest on the axis of the beam and will diminish the further from the
axis the target is located within the beam. |
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Term
| What is the simplest method of tracking for an Angle-Tracking Servo System? |
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Definition
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Term
| Why was the monopulse method of tracking developed? |
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Definition
| To overcome tracking errors involved with conical scanning and sequential lobing. |
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Term
| What is the most expensive and complex method of tracking? |
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Definition
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Term
| What are the three classes of stabilization for Tracking Systems? |
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Definition
| Unstabilized, partially stabilized, and fully stabilized |
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