MIL-STD-2071 Testing Of Chaff Radar Cross-SectionThis standard establishes the procedures, requirements, and instructions for testing chaff payloads under flight conditions to determine compliance with the associated system performance or detail specification specified in the contract.

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MIL-STD-2071A(AS)

APPENDIX

4.4.2 Optional data processing. When required in the associated specification, or by the test engineer, the following data processing shall be performed.

4.4.2.1 First level statistics of selected sample gates. Plot the first level statistics of the RCS values for each discrete chaff unit or sample of continuous chaff for selected sample gates. The RCS value shall be plotted versus the percent of pulses that equaled or exceeded that RCS value. The RCS values shall be quantized and plotted in 0.3-dB steps, and the filtered results shall be plotted as a function of time.

4.4.2.2 Pulse-to-pulse RCS data. Print out or display the pulse-to-pulse RCS values.

4.4.2.3 First level changes in RCS values for selected sample gates. Plot the first level statistics of the changes in RCS values from pulse-to-pulse for each discrete chaff unit or sample of continuous chaff for selected sample gates. The changes in RCS values shall be plotted versus the percent of pulse pairs that equaled or exceeded that change in RCS value. The RCS values shall be quantized in approximately 0.3 dB steps.

4.4.2.4 Second level changes in RCS values. Calculate and print out or display the second level statistics of the changes in RCS values of the pulse-to-pulse RCS data.

4.4.2.5 Second level changes in RCS values for selected sample gates. Calculate and plot

the second level statistics of the changes in RCS values from pulse-to-pulse for each discrete chaff unit or sample of continuous chaff for selected sample gates. These plots are identical to those of

4.4.2.3 in this appendix except they are the average of "N" first level plots, where the data for all

"N" plots were taken under the same conditions.

4.4.3 Data processing. After the test is completed, the data shall be processed using on-site data processing equipment. As a minimum, the following outputs shall be provided:

a. A printout of first level statistics as specified in 4.4.1.3 of this appendix.

b. A printout of second level statistics as specified in 4.4.1.4 of this appendix. c. A plot of the shadow graph for chaff as specified in 4.4.1.2 of this appendix.