Interstitial filter system and method with improved performance

A method for processing detection and range signals using a digital signal processor configured to implement a filter bank comprising a series of adjacent baseline filters with received reflected signals, said method comprising:

• in said digital signal processor filter bank:
• generating an interstitial filter that overlaps a first baseline filter and a second baseline filter of an adjacent pair of baseline filters by combining a first filter output of the first baseline filter and a second filter output of the second baseline filter;
• using the interstitial filter to detect frequency components between frequencies of the first and second baseline filters and to produce a third output;
• including the third output with the first and second outputs in further processing of the detection and range signals;
• producing a detection and range output from the further processed detection and range signals;
• wherein:
• the output is selected from the group consisting of:
• a continuous wave radar detection and range output, a pulse Doppler detection and range radar output, a Light Detection And Ranging (LIDAR) detection and range output, a Sound Navigation And Ranging (SONAR) detection and range output, and an acoustic detection and range output.