STEP 1 OF 7

Operating Frequency

Analyze the RCS curve, then select your radar frequency
Mr. K. Schaller
EW and Survivability Expert

Design Variables — available knobs and cost ranges
Reff = ⁴√( Pt · Gt² · λ² · σ  /  (4π)³ · Pr,min )
KnobCost RangeEffect on ReffAlso Controls
FREE Frequency f $0 λ²·σ product (trade space) Jammer vulnerability, atm. loss
COST Sensitivity Pr,min $5K – $750K ∝ (1/Pr,min)¼ Noise floor, receiver complexity
COST Tx Power Pt $25K – $12M ∝ Pt¼ Weight, cooling, prime power
COST Antenna Gain Gt $5K – $5M ∝ Gt½ (enters squared) Aperture size, beamwidth
FREE Pulse Width τ $0 None — affects δR only δR = cτ/2 (range resolution)
REQ 1: Detect H-20 at ≥330 km slant range  ·  REQ 2: Resolve two H-20s (δR ≤ 50 km)
Goal: satisfy both requirements at minimum total cost.
H-20 RCS vs Frequency — nose-on (m²)  ·  red bands = active jamming  ·  ∇ = selected frequency
Received Power vs Slant Range  ·  vertical line = 330 km requirement
First Design Review — commit to enter the sandbox
Frequency:
R_eff — km
H-20 range: — km
Beam: —°
Blind range—
Cur range—
ΔR—
Runambig—
Max LOS—
Noise floor—
Received Power vs Slant Range
Radar return Pr Jammer Pj Pr,min Detect No detect Jammed Burn-through

H-20 Bomber — Nose-On RCS vs Frequency

Intel Brief

H-20 Jammer Configuration

ParameterBand 1Band 2
Freq range 100 MHz – 2.35 GHz 5.1 – 6.1 GHz
Pj (transmit) 100 W 500 W
Gj 10 (10 dBi) 10 (10 dBi)
Detection rule Pr > Pj,rx  (SNR ≥ 1.0)

Design Frequency Reference

Frequencyσ (m²)σ (dBsm)Status