Principles of Modern Radar - Volume 2 1891121537

Chapter 71. Waveform bandwidth = 150 MHzAntenna size (horizontal) = 2mSampling interval = 0.5 mIntegration angle (L-band) = 8.5944 degIntegration angle (X-band) = 0.85944 degSAR baseline (L-band) = 150 mSAR baseline (X-band) = 15 mAppendix A: Answers to Selected Problems 8253. Depth-of-focus for RDA (L-band) = 26.6667 mDepth-of-focus for RDA (X-band) = 266.6667 mFor L-band, the DOF is much less than the desired swath depth of 200 m, so the variationin the PSR over downrange must be taken into account by a Stolt interpolation (RMA),or by imaging with the approximation to RDA and allowing the terms to vary overdownrange. At X-band, a single PSR is good enough.5. Area coverage rate = 20000 mˆ2/sArea coverage rate = 72 kmˆ2/hrAchieved utility = 20000 m/sPotentail utility = 86602540.3784 m/sChapter 81.DTED or HRE Level 0 1 2 3 4 5 6 7 8Post Spacing (m) 928 93 31 10 3 1.1 0.5 0.25 0.125# of Posts in 10 km 2 116 11,562 104,058 10 6 1.11×10 7 8.26 × 10 7 4 × 10 8 1.6 × 10 9 6.4 × 10 93. y 0 = y 1 − h tan ψ = 5100 − 73.6 · tan (0.361158) = 73.22 m[5. ĥ (y 1 ) ≈ α IF φab (y 0 ) − φab FE (y 0) ] =−4.3388 (444.0425 − 460.96) = 73.4016 my 1 = 5072.2 + 73.4 sin (20.693 ◦ ) = 5098.14 mError in h =73.4 − 73.6∣ 73.6 ∣ = 0.27 %Error in y 1 =5098.14 − 5100∣ 5100 ∣ = 0.0365 %17. γ noise =⇒ χ = γ noise1 + χ −1 1 − γ noiseSetting γ noise = 0.7, 0.8 and 0.9 gives χ = 2.33 (3.68 dB), 4 (6.02 dB), and 9 (9.54 dB).∣ 9.N−1 ∑∣∣∣ ∣ a[n] b ∗ N−1 ∑[n]∣a[n] α ∗ a ∗ [n]∣n=0| ˆγ | = √ (N−1 )( ∑ N−1) =n=0√ (N−1 )( ∑ ∑ N−1)∑|a[n]| 2 |b[n]| 2 |a[n]| 2 |αa[n]| 2n=0n=0n=0n=0=√ (N−1∑n=0|α|∣N−1 ∑n=0|a[n]| 2 ∣ ∣∣∣)( N−1) =∑|a[n]| 2 |a[n]| 2 |α| 2n=0|α||α| N−1 ∑n=0√ (N−1∑n=0|a[n]| 2|a[n]| 2 ) 2= 1