Airborne Radar Detection Model

AIRADE is an interactive computer program for evaluating airborne radar performance. It is used as a tool for design, analysis, and mission planning for airborne radar surveillance and fire control systems. AIRADE models and evaluates the performance of various moving target indicator (MTI) and pulse-Doppler radar systems. It provides useful tools for both radar analysis as well as performance capability reporting of airborne radar systems. Additionally, AIRADE has the ability to generate clutter data for the low pulse repetition frequency (LPRF), MTI, and pulse-Doppler waveform modes. The model was initially developed for evaluating airborne intercept and early warning radar systems. AIRADE simulates search, acquisition, and track modes as well as computes coverage diagrams for radar-centered azimuth, radar-centered elevation, target-centered azimuth, and target-centered elevation.

AIRADE can operate in search, acquisition, track, coverage, or clutter map mode. The search simulation is used to evaluate the radar search mode detection performance for specified radar configurations or generalized search scenarios. Environmental factors such as ground clutter, multipath, and atmospheric attenuation are included in the performance evaluation. Stand-off and self-screening noise jammers may be included in the scenario. Pulse-Doppler and LPRF/MTI search waveforms may also be specified for the radar. The radar platform is limited to level flight, while a climb or dive angle may be specified for the target. The acquisition simulation mode simulates the acquisition function of a fire-control radar. General acquisition models can be implemented to represent a variety of acquisition mode designs. The tracking simulation models the ability of a tracking system to remain in track. A break-lock condition is modeled only for the case of signal loss. Deceptive jamming and break-lock due to target maneuvers are not included. In coverage mode, both target and radar centered analysis can be performed in either the azimuth or elevation plane. The radar-centered modes allow users to elevate the search volume coverage of the radar instantaneously. The target-centered mode allows target detectability to be studied in a region centered around the target. The clutter map simulation generates clutter data for the LPRF/MTI and pulse-Doppler waveform modes.

Input: 

AIRADE is controlled by the user through input panels logically organized by functional data. These panels are used for data entry as well as program control. A few of the panels that the user can specify information through include pulse-Doppler system parameters; LPRF/MTI system parameters; pulse-Doppler search waveform data; pulse-Doppler waveform parametric data; pulse-Doppler confirmation and track waveform; antenna parameters; radio frequency (RF) front-end parameters; target data; environment data; engagement scenario data; coverage data; simulation; plot specifications; and print control.

Output: 

Basic outputs of the search and tracking simulations are probability of detection or track break-lock vs. range or time plot (respectively). Parametric plots are available. AIRADE also has the capability to generate antenna patterns and range-Doppler clutter maps in a 2- or 3-D format using X/Z axis rotation pairing. In addition to generating screen and file hardcopy X/Y coverage, clutter maps, and antenna pattern plots; AIRADE can also be used to create postscript, encapsulated postscript, Corel Draw EPS, and FrameMaker files intended for import within electronic publishing programs.

Page Distribution Statement:

Distribution Statement A: Approved for public release; distribution is unlimited.

Model Distribution Statement:

The AIRADE V7.4 PC Beta 1, Release 1 CD is SECRET//NOFORN

DISTRIBUTION STATEMENT D.Distribution authorized to the Department of Defense and U.S. DoD contractors only, CRITICAL TECHNOLOGY, April 1998. Other requests for this document shall be referred to AFLCMC/EZJA Wright-Patterson Air Force Base, Ohio 45433-7334.

WARNING− This media contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et seq.) or the Export Administration Act of 1979 (Title 50, U.S.C., App. 2401 et seq), as amended. Violations of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DoD Directive 5230.25.

PN– AIRADE-CD-C-001