... (4. 38)3588_C0 04. indd 97 11/20/07 5:00: 24 PM© 2008 by Taylor & Francis Group, LLC96 Atmospheric Acoustic Remote Sensing 4. 10 FREQUENCY-DEPENDENT FORM OFTHE ACOUSTIC RADAR EQUATIONThe acoustic ... FourJay 44 0-8 speaker at 3 kHz with a 1.2-m diameter dish having a focal length of 580 mm.3588_C0 04. indd 61 11/20/07 4: 57:05 PM© 2008 by Taylor & Francis Group, LLC88 Atmospheric Acoustic Remote ... , , .FIGURE 4. 44 A step-chirp signal having M = 5 frequency steps.3588_C0 04. indd 101 11/20/07 5:00:37 PM© 2008 by Taylor & Francis Group, LLC58 Atmospheric Acoustic Remote Sensing cal....