Low probability of intercept (LPI) radar or data link performance is a complex function of many variables. There are three main elements of low probability of intercept system (LPIS) performance that affect a stealthy system's success: 1. The actual design features incorporated into the emitting system specifically for LPI. 2. The electronic support measure (ESM) strategy and corresponding implementation utilized by threat forces. Hostile forces' ESM strategy and implementation are very important factors affecting any LPI design. Design strategy begins with analysis of individual threat receiver characteristics against which the LPIS may be deployed. The electronic order of battle (EOB) deployment and location strategy for intercept receivers must also be considered in order to create the most successful design features. Additionally, the issue of whether or not individual interceptors are netted has a strong influence on the strategies an LPIS might use. 3. The geometry between the area of regard (AOR) and threat receivers.

Chapter Contents:

• 3.1 Interceptability parameters
• 3.1.1 Interceptability footprints
• 3.1.2 Interceptor time response
• 3.1.3 Receiver sensitivity versus intercept probability
• 3.1.4 Power management
• 3.2 Interceptibility analysis
• 3.2.1 Intercept receiver sensitivity
• 3.2.2 Sidelobe intercept range
• 3.2.3 Interceptor detection probabilities
• 3.2.4 Interceptability time constraints
• 3.2.5 Interceptability frequency constraints
• 3.2.6 Antenna gain mismatch
• 3.2.7 Cumulative probability of intercept
• 3.3 Example mode interceptability calculations
• 3.3.1 Data link mode interceptability example
• 3.4 Footprint calculation
• 3.4.1 "Cookie cutter" footprints
• 3.4.2 More accurate footprints
• 3.5 Bistatics
• 3.5.1 Bistatic properties
• 3.5.2 Bistatic threats
• 3.6 Exercises
• References

Inspec keywords: military equipment; electronic countermeasures; military radar; design engineering; radar equipment

Other keywords: stealthy system; data link performance; individual threat receiver characteristics; EOB deployment; intercept receivers; individual interceptors; AOR geometry; interceptibility analysis; ESM strategy; LPI radar; low probability of intercept system; area of regard; LPI design constraint features; netting constraints; LPIS performance; electronic order of battle; electronic support measure; threat receiver geometry; interceptibility parameters; emitting system design features; threat forces; hostile forces; EOB location strategy; low probability of intercept

Subjects: Radar equipment, systems and applications; Radar and radiowave systems (military and defence); Electromagnetic compatibility and interference; Radar theory